added h4, h4+ and h4_ultra with updated sbc model framework

add mask fix for rock5b v1.3

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "SBC_Model_Framework"]
 	path = SBC_Model_Framework
-	url = git@github.com:hominoids/SBC_Model_Framework.git
+	url = https://github.com/hominoids/SBC_Model_Framework.git

get_customizer_values.scad

@@ -1,9 +1,9 @@
 // Gets a list of SBCs from the SBC Model Framework and Accessory sets
 //  for use with SBC Case Builder.
 // After running this script, copy the output from the first Echo command into the
-// list of SBC boards in `sbc_case_builder.scad:80`
+// list of SBC boards in `sbc_case_builder.scad:32`
 // Also copy the output from the second Echo command into the list of case acceessory
-// sets in `sbc_case_builder.scad:160`
+// sets in `sbc_case_builder.scad:196`
 
 include <./SBC_Model_Framework/sbc_models.cfg>;
 include <./sbc_case_builder_accessories.cfg>;
@@ -14,4 +14,4 @@ echo(boards);
 
 accessory_sets = [for(i=[0:1:len(accessory_data)-1]) accessory_data[i][0]];
 echo("Copy the following to `sbc_case_builder.scad` for the `accessory_name` variable");
-echo(accessory_sets);
+echo(accessory_sets);

lib/access_panel.scad

@@ -0,0 +1,170 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    access_cover(size, orientation)
+    access_panel(size, orientation, mask)
+
+*/
+
+
+/*
+           NAME: access_cover
+    DESCRIPTION: creates covers for access port openings
+           TODO: none
+
+          USAGE: access_panel(size[], orientation)
+
+                        size[0] = size_x
+                        size[1] = size_y
+                        size[2] = floor thickness
+                    orientation = "landscape", "portrait"
+*/
+
+module access_cover(size, orientation) {
+
+    size_x = size[0];
+    size_y = size[1];
+    floorthick = size[2];
+    adj = .01;
+    $fn = 90;
+    if(orientation == "portrait") {
+        difference() {
+            union() {
+                translate([1, 6.25, 0]) cube([size_x-2.15, size_y-17.5, floorthick]);
+                translate([(size_x/2)-4.75, size_y-12.25, 0]) slab([10, 5, floorthick], 5);
+                translate([1, 6.25, floorthick-adj]) cube([size_x-2.15, 6, floorthick]);
+                translate([4.25, 3, floorthick]) cube([7.25, 4, 2]);
+                translate([size_x-12.75, 3, floorthick]) cube([7.25, 4, 2]);
+                if(size_x > 100) {
+                    translate([(size_x/2)+.25, 3, floorthick]) cube([7.25, 4, 2]);
+                }
+            }
+            translate([(size_x/2)+.25, size_y-6.5, -floorthick-adj]) 
+                cylinder(d=3.2, h=(floorthick*2)+(adj*2));
+            translate([(size_x/2)+.25, size_y-6.5, -adj]) 
+                cylinder(d1=6, d2=3.2, h=floorthick);
+        }
+    }
+    if(orientation == "landscape") {
+        difference() {
+            union() {
+                translate([6.25, 0, 0]) cube([size_x-17.75, size_y-2, floorthick]);
+                translate([size_x-12.25, (size_y/2)-5.75, 0]) slab([5, 10, floorthick], 5);
+                translate([6.25, 0, floorthick-adj]) cube([6,size_y-2.15, floorthick]);
+                translate([3.5+adj, 3.25, floorthick]) cube([4, 7.25, 2]);
+                translate([3.5+adj, size_y-12.75, floorthick]) cube([4, 7.25, 2]);
+                if(size_y > 100) {
+                    translate([3.5+adj, (size_y/2)-(7.75/2)-1,  floorthick]) cube([4, 7.25, 2]);
+                }
+            }
+            translate([size_x-6.5, (size_y/2)-.75, -floorthick-adj]) 
+                cylinder(d=3.2, h=(floorthick*2)+(adj*2));
+            translate([size_x-6.5, (size_y/2)-.75, -adj]) 
+                cylinder(d1=6, d2=3.2, h=floorthick);
+        }
+    }
+}
+
+
+/*
+           NAME: access_panel
+    DESCRIPTION: creates opening and structure for access openings
+           TODO: none
+
+          USAGE: access_panel(size[], orientation, mask)
+
+                        size[0] = size_x
+                        size[1] = size_y
+                        size[2] = floor thickness
+                    orientation = "landscape", "portrait"
+                        mask[0] = true enables component mask
+                        mask[1] = mask length
+                        mask[2] = mask setback
+                        mask[3] = mstyle "default"
+
+*/
+
+module access_panel(size, orientation, mask) {
+
+    size_x = size[0];
+    size_y = size[1];
+    floorthick = size[2];
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true && mstyle == "default") {
+        if(orientation == "portrait") {
+            translate([0,0,floorthick+adj-mlength+msetback]) cube([size_x, size_y, mlength]);
+        }
+        if(orientation == "landscape") {
+            translate([0, -1, floorthick+adj-mlength+msetback]) cube([size_x-1, size_y, mlength]);
+        }
+    }
+    if(enablemask == false) {
+        if(orientation == "portrait") {
+            difference() {
+                union() {
+                    cube([size_x, size_y, floorthick]);
+                    // access panel support
+                    translate([(size_x/2)+.25, size_y-6.5, 0]) cylinder(d=9, h=floorthick+(adj*2)+5);
+                    translate([(size_x/2)-10, size_y-11, floorthick-adj]) cube([20, 9.5, floorthick]);
+                    translate([1, 0, floorthick-adj]) cube([size_x-2, 5, 4.5]);
+                }
+                // access opening
+                translate([.5, 6, -adj]) cube([size_x-1.15, size_y-17, floorthick+(adj*2)]);
+                translate([(size_x/2)-5, size_y-12, -adj]) slab([10.5, 5.5, floorthick], 5.5);
+                translate([(size_x/2)+.25, size_y-6.5, floorthick+2])
+                    cylinder(r=3.2, h=floorthick+(adj*2)+5, $fn=6);
+                translate([(size_x/2)+.25, size_y-6.5, -adj]) 
+                    cylinder(d=3.2, h=floorthick+(adj*2)+5);
+                translate([4, 2+adj, floorthick]) cube([7.75, 3, 2.75]);
+                translate([size_x-13, 2+adj, floorthick]) cube([7.75, 3, 2.75]);
+                if(size_x > 100) {
+                    translate([(size_x/2), 2+adj, floorthick]) cube([7.75, 3, 2.75]);
+                }
+            }
+        }
+        if(orientation == "landscape") {
+            difference() {
+                union() {
+                    translate([0, -1, 0]) cube([size_x, size_y, floorthick]);
+                    // access panel support
+                    translate([size_x-6.5, (size_y/2)-.5, 0]) cylinder(d=9, h=floorthick+(adj*2)+5);
+                    translate([size_x-11, (size_y/2)-10.5, floorthick-adj]) cube([9.5, 20, floorthick]);
+                    translate([0, 0, floorthick-adj]) cube([5, size_y-2, 4.5]);
+                }
+                // access opening
+                translate([6, -.5, -adj]) cube([size_x-17, size_y-1.15, floorthick+(adj*3)]);
+                translate([size_x-12, (size_y/2)-6, -adj]) slab([5.5, 10.5, floorthick], 5.5);
+                translate([size_x-6.5, (size_y/2)-.5, floorthick+2]) rotate([0, 0, 30])
+                    cylinder(r=3.2, h=floorthick+(adj*2)+5, $fn=6);
+                translate([size_x-6.5, (size_y/2)-.5, -adj]) 
+                    cylinder(d=3.2, h=floorthick+(adj*2)+5);
+                translate([2+adj, 3, floorthick]) cube([3, 8.25, 2.75]);
+                translate([2+adj, size_y-13, floorthick]) cube([3, 8.25, 2.75]);
+                if(size_y > 100) {
+                    translate([2+adj, (size_y/2)-(7.75/2)-1.25, floorthick]) cube([3, 7.75, 2.5]);
+                }
+            }
+        }
+    }
+}

lib/art.scad

@@ -0,0 +1,59 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    art(scale_d1, size_z, filename)
+    stl_model(scale_d1, filename)
+
+*/
+
+
+/*
+           NAME: art
+    DESCRIPTION: create 2d artwork using dxf or svf
+           TODO: none
+
+          USAGE: art(scale_d1, size_z, filename)
+
+                     scale_d1 = amount to scale file
+                       size_z = floor thickness
+                     filename = file name
+
+*/
+
+module art(scale_d1, size_z, filename) {
+
+    linear_extrude(height = size_z) import(file = filename, scale=scale_d1);
+
+}
+
+
+/*
+           NAME: stl_model
+    DESCRIPTION: import 3d artwork using stl
+           TODO: none
+
+          USAGE: stl_model(scale_d1, filename)
+
+                           scale_d1 = amount to scale file
+                           filename = file name
+*/
+
+module stl_model(scale_d1, filename) {
+
+    import(file = filename, scale=scale_d1);
+
+}

lib/batteries.scad

@@ -0,0 +1,132 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    battery(type)
+    battery_clip(bat_dia = 18.4)
+    batt_holder(tolerance)
+
+*/
+
+
+/*
+           NAME: battery
+    DESCRIPTION: creates 18650 and 21700 batteries
+           TODO: none
+
+          USAGE: battery(type)
+
+                         type = "18650", "18650_convex", "21700"
+*/
+
+module battery(type) {
+
+    adj = .01;
+
+    if(type == "18650") {
+        difference() {
+            color("#73bc73") cylinder(d=18.4, h=65);
+            translate([0,0,65-4]) difference() {
+                cylinder(d=18.5, h=2);
+                cylinder(d=17.5, h=3);
+            }
+        }
+    }
+    if(type == "18650_convex") {
+        difference() {
+            color("#73bc73") cylinder(d=18.4, h=68);
+            translate([0,0,65-4]) difference() {
+                color("#73bc73") cylinder(d=18.5, h=2);
+                color("#73bc73") cylinder(d=17.5, h=3);
+            }
+            translate([0,0,65-adj]) difference() {
+                color("silver") cylinder(d=18.5, h=3+2*adj);
+                color("silver") cylinder(d=14.4, h=3+2*adj);
+            }
+            color("silver") translate([0,0,68-adj]) cylinder(d=14.4, h=.1);
+        }
+    }
+    if(type == "21700") {
+        difference() {
+            color("#73bc73") cylinder(d=21, h=70);
+            translate([0,0,70-4]) difference() {
+                cylinder(d=21.1, h=2);
+                cylinder(d=20.1, h=3);
+            }
+        }
+    }
+}
+
+
+/*
+           NAME: battery_clip
+    DESCRIPTION: creates 18650 and 21700 batteries
+           TODO: none
+
+          USAGE: battery_clip(bat_dia = 18.4)
+*/
+
+module battery_clip(bat_dia = 18.4) {
+    
+    mat = .38;
+    width = 9.5;
+    tab = 8.9;
+    bat_holder = bat_dia+2*mat;
+    adj = .1;
+
+    translate([-5.5,0,10.5]) {
+        difference() {
+            translate([0,width,0]) rotate([90,0,0]) cylinder(d=bat_holder, h=9.5);
+            translate([0,width+adj,0]) rotate([90,0,0]) cylinder(d=bat_dia, h=10.5);
+            translate([mat/2-11.1/2,-adj,mat-1.3-bat_dia/2]) cube([11.1-mat,width+2*adj,3]);
+            translate([0,width+adj,0]) rotate([90,-45,0]) cube([bat_dia,bat_dia,bat_holder]);
+        }
+        difference() {
+            translate([-11.1/2,0,-1.3-bat_dia/2]) cube([11.1,width,3]);
+            translate([mat-11.1/2,-adj,mat/2-1.3-bat_dia/2]) cube([11.1-2*mat,width+2*adj,3]);
+        }
+        difference() {
+            translate([-(tab/2),-3.5,-1-bat_dia/2]) rotate([-5,0,0]) cube([tab,3.5,10]);
+            translate([-(tab/2)-adj,-3.5+mat,mat-1-bat_dia/2]) rotate([-5,0,0]) cube([tab+2*adj,3.5+mat,10]);
+        }    
+        translate([0,-2.225,0]) rotate([85,0,0]) cylinder(d=tab, h=mat);
+        difference() {
+            translate([0,-2.75,0]) sphere(d=3);
+            translate([-5,-2.75,-5]) rotate([85,0,0]) cube([tab,10,10]);
+        }
+    }
+}
+
+
+/*
+           NAME: battery_holder
+    DESCRIPTION: creates cr2032 friction fit coinstyle holder
+           TODO: none
+
+          USAGE: batt_holder(tolerance)
+*/
+
+module batt_holder(tolerance) {
+    
+    $fn = 90;
+    difference () {
+        cylinder(d=25.5,h=6);
+        translate ([0,0,-1]) cylinder(d=20.4+tolerance,h=8);
+        cube([14,26,13], true);
+    }
+    cylinder(r=12.75, h=2);
+}
+

lib/buttons.scad

@@ -0,0 +1,206 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    buttons(style, diameter, height, mask)
+    button_assembly(style, diameter, height)
+    button_clip(style)
+    button_plunger(style, diameter, height)
+    button_top(style, diameter, height)
+
+*/
+
+
+/*
+           NAME: buttons
+    DESCRIPTION: creates different button bodys and styles
+           TODO: none
+
+          USAGE: buttons(style, size, radius, post, mask)
+
+                        style = "recess", "cutout"
+                      size[0] = diameter of button body
+                      size[2] = height above button
+                       radius = radius for cutout style
+                         post = button post size for cutout style
+                      mask[0] = true enables component mask
+                      mask[1] = mask length
+                      mask[2] = mask setback
+                      mask[3] = mstyle "default"
+*/
+
+module buttons(style, size, radius, post, mask) {
+
+    size_x = size[0];
+    size_y = size[1];
+    size_z = size[2];
+    diameter = size[0];
+    height = size[2];
+    gap = 1.5;
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true && mstyle == "default") {
+        if(style == "recess") {
+            translate([0, 0, -adj-msetback]) cylinder(d = diameter-2*adj, h = mlength);
+        }
+        if(style == "cutout") {
+            translate([-size[0]+2.5, -2.5-size[1]/2, -adj-msetback]) cube([size[0]+1, size[1]+5, mlength]);
+        }
+    }
+    if(enablemask == false) {
+        if(style == "recess") {
+            difference() {
+                union() {
+                    sphere(d=diameter);
+                    translate([0,0,-height+3]) cylinder(d=6, h=height-6);
+                }
+                translate([-(diameter/2)-1,-(diameter/2)-1,0]) cube([diameter+2,diameter+2,(diameter/2)+2]);
+                difference() {
+                    union() {
+                        sphere(d=diameter-2);
+                    }
+                }
+                translate([-1.75, -1.25, -height-1]) cube([3.5, 2.5, height+2]);
+                translate([0,0,-(diameter/2)]) cylinder(d=5, h=2);
+            }
+        }
+        if(style == "cutout") {
+            difference() {
+                translate([-size[0]+2, -3-size[1]/2, 0]) slab_r([size[0]+2,size[1]+6,size[2]-2*adj], [.1,.1,.1,.1]);
+                difference() {
+                    translate([-size[0]+3, -size[1]/2, -adj]) 
+                        slab_r([size[0],size[1],size[2]], [radius[0],radius[1],radius[2],radius[3]]);
+                    translate([-size[0]+3+(gap/2), -size[1]/2+(gap/2), -1]) slab_r([size[0]-gap,size[1]-gap,1+size[2]+2*adj], 
+                        [radius[0],radius[1],radius[2]-gap/2,radius[3]-gap/2]);
+                    translate([3-size[0]-gap, -1, -1]) cube([gap*2, 2, 1+height+2*adj]);
+                }
+                translate([0, 0, 2]) sphere(d=3);
+            }
+            translate([0, 0, adj-post]) cylinder(d=3, h=post);
+        }
+    }
+}
+
+
+/*
+           NAME: button_assembly
+    DESCRIPTION: creates button assembly of plunger,top,clip
+           TODO: none
+
+          USAGE: button_assembly(style, diameter, height)
+
+                                 style = "recess", "cutout"
+                              diameter = diameter of button body
+                                height = height above button
+*/
+
+module button_assembly(style, diameter, height) {
+
+adj = .01;
+$fn = 90;
+
+    if(style == "recess") {
+        button_plunger(style, diameter, height);
+        button_top(style, diameter, height);
+        translate([0,0,-height]) button_clip(style);
+    }
+}
+
+
+/*
+           NAME: button_clip
+    DESCRIPTION: creates button c-clip
+           TODO: none
+
+          USAGE: button_clip(style)
+
+                             style = "recess", "cutout"
+*/
+
+module button_clip(style) {
+
+adj = .01;
+$fn = 90;
+
+    if(style == "recess") {
+        difference() {
+            cylinder(d=8.5, h=.8);
+            translate([-1.5,-1.75,-adj]) cube([2.75,3.5,1]);
+            translate([-.75,-.75,-adj]) cube([5,1.25,1.25]);
+        }
+    }
+}
+
+
+/*
+           NAME: button_plunger
+    DESCRIPTION: creates button plunger
+           TODO: none
+
+          USAGE: button_plunger(style, diameter, height)
+
+                                style = "recess", "cutout"
+                             diameter = diameter of button body
+                               height = height above button
+*/
+
+module button_plunger(style, diameter, height) {
+
+adj = .01;
+$fn = 90;
+
+    if(style == "recess") {
+        difference() {
+            translate([-1.5,-1,-(height)-2]) cube([3,2,height+1]);
+            translate([-1.5-adj,-1.5,-height]) cube([.5,3,1]);
+            translate([1+adj,-1.5,-height]) cube([.5,3,1]);
+            translate([-1.5-adj,-1.5,-4]) cube([.5,3,4]);
+            translate([1+adj,-1.5,-4]) cube([.5,3,4]);
+        }
+    }
+}
+
+
+/*
+           NAME: button_top
+    DESCRIPTION: creates button top
+           TODO: none
+
+          USAGE: button_top(style, diameter, height)
+
+                                style = "recess", "cutout"
+                             diameter = diameter of button body
+                               height = height above button
+*/
+
+module button_top(style, diameter, height) {
+
+adj = .01;
+$fn = 90;
+
+    if(style == "recess") {
+        difference() {
+            translate([0,0,-3]) cylinder(d=5, h=2.75);
+            translate([-1.25,-1.25,-3-adj]) cube([2.5,2.5,2]);
+        }
+    }
+}

lib/cable_holder.scad

@@ -0,0 +1,43 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    cableholder_spacer()
+*/
+
+
+/*
+           NAME: cableholder_spacer
+    DESCRIPTION: creates spacer and cable holder for drive mounts
+           TODO: none
+
+          USAGE: cableholder_spacer()
+
+*/
+
+module cableholder_spacer() {
+    
+    size = [9.4,16,6];
+    $fn = 90;
+    translate([0,size[2]/2,-5]) rotate([90,0,0])
+    difference() {
+        translate([size[0]/2,size[0]/2,0]) rotate([0,0,90]) slot(size[0],size[1],size[2]);
+        translate([-1,5,3]) rotate([0,90,0]) cylinder(d=3.2, h=12);
+        translate([-1,7.5,-1]) cube([2,20,9]);
+        translate([5,9.5,-1]) rotate([0,0,90]) slot(4.5,11,9);
+        translate([3,20,-1]) rotate([0,0,45]) cube([2,6,9]);
+    }
+}

lib/custom.scad

@@ -0,0 +1,138 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    hk_h3_port_extender(style, mask)
+    hk_h3_port_extender_holder(part, offset)
+
+*/
+
+
+/*
+           NAME: hk_h3_port_extender
+    DESCRIPTION: @mctom's odroid-h3 gpio port extender
+           TODO: none
+
+          USAGE: hk_h3_port_extender(style, mask)
+
+                                     style = "header", "remote"
+                                   mask[0] = true enables component mask
+                                   mask[1] = mask length
+                                   mask[2] = mask setback
+                                   mask[3] = mstyle "default"
+*/
+
+module hk_h3_port_extender(style, mask) {
+
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    adj=.01;
+    $fn = 90;
+
+    if(style == "header") {
+        if(enablemask == true && mstyle == "default") {
+            translate([0, 14.5, 12-msetback]) cube([7.75, 15.75, mlength]);
+            translate([9.5, 14.5, 12-msetback]) cube([7.75, 15.75, mlength]);
+            translate([19, 14.5, 12-msetback]) cube([7.75, 15.75, mlength]);
+            translate([16, 32.2, 12-msetback]) cylinder(d=3, h=12);
+        }
+        if(enablemask == false) {
+            // gpio 24 pin front position
+            header("angled", -1.75, .1, 0, "top", 0, [12,2,8], ["thruhole","black","female",2.54,"silver"], 
+                1.6, false, [true,10,2,"default"]);
+            difference() {
+                color("#008066") slab([33,35.25,1.6], .25);
+                color("#008066") translate([15.95,4.6,-1]) cylinder(d=3, h=6);
+                color("#008066") translate([15.95,32.15,-1]) cylinder(d=3, h=6);
+            }
+            header("angled", 27.65, 29.6, 0, "bottom", 90, [2,2,6], ["thruhole","black","male",2.54,"silver"], 
+                1.6, false, [true,10,2,"default"]);
+            header("angled", 30.5, 16.5, 0, "bottom", 90, [5,2,6], ["thruhole","black","male",2.54,"silver"], 
+                1.6, false, [true,10,2,"default"]);
+            usb2("single_up_a", .925, 15.375, 0, "top", 180, [0,10.5,0], [0], 1.6, false, [true,10,2,"default"]);
+            usb2("single_up_a", 10.395, 15.375, 0, "top", 180, [0,10.5,0], [0], 1.6, false, [true,10,2,"default"]);
+            usb2("single_up_a", 19.925, 15.375, 0, "top", 180, [0,10.5,0], [0], 1.6, false, [true,10,2,"default"]);
+        }
+    }
+    if(style == "remote") {
+        if(enablemask == true && mstyle == "default") {
+            translate([0, 14.5, 12-msetback]) cube([7.75, 15.75, mlength]);
+            translate([9.5, 14.5, 12-msetback]) cube([7.75, 15.75, mlength]);
+            translate([19, 14.5, 12-msetback]) cube([7.75, 15.75, mlength]);
+            translate([16, 32.2, 12-msetback]) cylinder(d=3, h=12);
+            translate([16, 4.6, 12-msetback]) cylinder(d=3, h=mlength);
+        }
+        if(enablemask == false) {
+            difference() {
+                color("#008066") slab([33,35.25,1.6], .25);
+                color("#008066") translate([15.95,4.6,-1]) cylinder(d=3, h=6);
+                color("#008066") translate([15.95,32.15,-1]) cylinder(d=3, h=6);
+            }
+            // gpio 24 pin front position
+            header("open", .75, 9, 0, "bottom", 0, [12,2,6], ["thruhole","black","male",2.54,"silver"], 
+                1.6, false, [true,10,2,"default"]);
+            header("angled", 27.65, 29.6, 0, "bottom", 90, [2,2,6], ["thruhole","black","male",2.54,"silver"], 
+                1.6, false, [true,10,2,"default"]);
+            header("angled", 30.5, 16.5, 0, "bottom", 90, [5,2,6], ["thruhole","black","male",2.54,"silver"], 
+                1.6, false, [true,10,2,"default"]);
+            usb2("single_up_a", .925, 15.375, 0, "top", 180, [0,10.5,0], [0], 1.6, false, [true,10,2,"default"]);
+            usb2("single_up_a", 10.395, 15.375, 0, "top", 180, [0,10.5,0], [0], 1.6, false, [true,10,2,"default"]);
+            usb2("single_up_a", 19.925, 15.375, 0, "top", 180, [0,10.5,0], [0], 1.6, false, [true,10,2,"default"]);
+        }
+    }
+}
+
+
+/*
+           NAME: hk_h3_port_extender_holder
+    DESCRIPTION: holder for the @mctom's remote h3 port extender
+           TODO: none
+
+          USAGE: hk_h3_port_extender_holder(part, offset)
+
+                                            part = "top","bottom","both"
+                                          offset = distance from mount face
+*/
+
+module hk_h3_port_extender_holder(part,offset=2) {
+
+    size = [16-offset,40,5.5];
+    adj = .01;
+
+    if(part == "bottom" || part == "both") {
+        difference() {
+            translate([-10+offset,-3.5,2]) cube(size);
+            translate([-.25,-.25,-adj]) cube([2.5, 33.25, 12]);
+            translate([2, 2, -adj]) cube([10, 28, 12]);
+            translate([-12,(33.25/2)+.25,4.5]) rotate([0,90,0]) cylinder(d=2.7, h=20, $fn=60);
+//            translate([-7,-1.,-adj]) cylinder(d=4.25, h=20);
+        }
+    }
+    if(part == "top" || part == "both") {
+        difference() {
+            translate([-10+offset,-3.5,29.5]) cube(size);
+            translate([-.25,-.25,28]) cube([2.5, 33.25, 12]);
+            translate([1.5, 2, 27.5-adj]) cube([10, 28.5, 12]);
+            translate([-12, -4, 28]) cube([20, 13, 10]);
+            translate([1.35, 20, 25.5]) cube([10, 13, 5]);
+            translate([-12,(33.25/2)+.25,32]) rotate([0,90,0]) cylinder(d=2.7, h=20, $fn=60);
+        }
+    }
+}
+

lib/dsub.scad

@@ -0,0 +1,107 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    dsub(style, gender, mask)
+
+*/
+
+
+/*
+           NAME: dsub
+    DESCRIPTION: creates dsub connectors
+           TODO: 9db male, 25db male and female
+
+          USAGE: dsub(style, gender, mask)
+
+                      style = "db9"
+                     gender = "female","male"
+                     mask[0] = true enables component mask
+                     mask[1] = mask length
+                     mask[2] = mask setback
+                     mask[3] = mstyle "default"
+*/
+
+module dsub(style, gender, mask) {
+
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true && mstyle == "default") {
+        translate([0,0,-msetback]) union() {
+            hull() {
+                translate([-7,3,-5]) cylinder(d=3, h=11+mlength);
+                translate([7,3,-5]) cylinder(d=3, h=11+mlength);
+                translate([-6.25,-3,-5]) cylinder(d=3, h=11+mlength);
+                translate([6.25,-3,-5]) cylinder(d=3, h=11+mlength);
+            }
+            // mount holes
+            translate([-12.5,0,-5]) cylinder(d=3.5, h=11+mlength);
+            translate([12.5,0,-5]) cylinder(d=3.5, h=11+mlength);
+        }
+    }
+    if(enablemask == false) {
+        if(style == "db9" && gender =="female") {
+            difference() {
+                union() {
+                    color("silver") hull() {
+                        translate([-6.5,2.5,-5]) cylinder(d=3, h=11);
+                        translate([6.5,2.5,-5]) cylinder(d=3, h=11);
+                        translate([-5.75,-2.5,-5]) cylinder(d=3, h=11);
+                        translate([5.75,-2.5,-5]) cylinder(d=3, h=11);
+                    }
+                    color("black") hull() {
+                        translate([-6,2.25,-6]) cylinder(d=3, h=12.25);
+                        translate([6,2.25,-6]) cylinder(d=3, h=12.25);
+                        translate([-5.25,-2.25,-6]) cylinder(d=3, h=12.25);
+                        translate([5.25,-2.25,-6]) cylinder(d=3, h=12.25);
+                    }
+                // mount plate
+                translate([-15.5,-6.5,-.25]) slab([31,13,.5], 2);
+                // rear pins
+                color("silver") translate([-5.48,1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([-2.74,1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([0,1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([2.74,1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([5.48,1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([-4.12,-1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([-1.38,-1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([1.36,-1.4,-8]) cylinder(d=1.5, h=9);
+                color("silver") translate([4,-1.4,-8]) cylinder(d=1.5, h=9);
+
+                }
+                // mount holes
+                color("silver") translate([-12.5,0,-3]) cylinder(d=3.2, h=6);
+                color("silver") translate([12.5,0,-3]) cylinder(d=3.2, h=6);
+                // pin holes
+                color("silver") translate([-5.48,1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([-2.74,1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([0,1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([2.74,1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([5.48,1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([-4.12,-1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([-1.38,-1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([1.36,-1.4,-9]) cylinder(d=1, h=16);
+                color("silver") translate([4,-1.4,-9]) cylinder(d=1, h=16);
+            }
+        }
+    }
+}

lib/fans.scad

@@ -0,0 +1,377 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    fans(style, mask)
+    fan_cover(size, thick)
+    fan_mask(size, thick, style)
+
+*/
+
+
+/*
+           NAME: fans
+    DESCRIPTION: creates different fan styles and sizes
+           TODO: add efficient vanes
+
+          USAGE: fans(style, mask)
+
+                      style = "box",
+                    mask[0] = true enables component mask
+                    mask[1] = mask length
+                    mask[2] = mask setback
+                    mask[3] = mstyle "default", "fan_open", "fan_1", "fan_2", "fan_hex"
+*/
+
+module fans(style, mask) {
+
+    // size, thick, hole-spacing, hole-size, hub-size
+    fan_data = [
+                ["box140x25", 140, 25, 124.5, 4.3, 40, "#353535"],
+                ["box120x25", 120, 25, 105, 4.3, 40, "#353535"],
+                ["box92x25", 92, 25, 82.5, 4.3, 40, "#353535"],
+                ["box92x10", 92, 10, 82.5, 4.3, 40, "#353535"],
+                ["box80x25", 80, 25, 72.5, 4.3, 35, "#353535"],
+                ["box80x10", 80, 10, 72.5, 4.3, 35, "#353535"],
+                ["box60x25", 60, 25, 50, 4.3, 30, "#353535"],
+                ["box60x10", 60, 10, 50, 4.3, 30, "#353535"],
+                ["box50x10", 60, 10, 40, 4.3, 20, "#353535"],
+                ["box40x10", 40, 10, 32, 4.3, 18, "#353535"],
+                ["box30x10", 30, 10, 24, 3.2, 12, "#353535"]
+               ];
+
+    f = search([style],fan_data);
+
+    diameter = fan_data[f[0]][1];
+    thickness = fan_data[f[0]][2];
+    hole_space = fan_data[f[0]][3];
+    hole_size = fan_data[f[0]][4];
+    hole_offset = (diameter-hole_space)/2;
+    hub_size = fan_data[f[0]][5];
+    fan_color = fan_data[f[0]][6];
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true) {
+        if(mstyle == "fan_open") {
+            translate([0, 0, thickness-msetback+1]) fan_mask(diameter, mlength, "fan_open");
+        }
+        if(mstyle == "default" || mstyle == "fan_1") {
+            translate([0, 0, thickness-msetback+1]) fan_mask(diameter, mlength, "fan_1");
+        }
+        if(mstyle == "fan_2") {
+            translate([0, 0, thickness-msetback+1]) fan_mask(diameter, mlength, "fan_2");
+        }
+        if(mstyle == "fan_hex") {
+            translate([0, 0, thickness-msetback+1]) fan_mask(diameter, mlength, "fan_hex");
+        }
+    }
+    if(enablemask == false) {
+        difference() {
+            union() {
+                color(fan_color) slab([diameter, diameter, 3], 4);
+                color(fan_color) translate([0, 0, thickness-3]) slab([diameter, diameter, 3], 4);
+                color(fan_color) translate([diameter/2, diameter/2, 0]) cylinder(d=diameter+2, h=thickness);
+
+            }
+            // holes
+            color(fan_color) translate([diameter/2, diameter/2, -1]) cylinder(d=diameter-2, h=thickness+2);
+            color(fan_color) translate([hole_offset,hole_offset,-1]) cylinder(d=hole_size, h=thickness+2);
+            color(fan_color) translate([hole_offset,diameter-hole_offset,-1]) cylinder(d=hole_size, h=thickness+2);
+            color(fan_color) translate([diameter-hole_offset,hole_offset,-1]) cylinder(d=hole_size, h=thickness+2);
+            color(fan_color) translate([diameter-hole_offset,diameter-hole_offset,-1]) cylinder(d=hole_size, h=thickness+2);
+            // trim sides
+            color(fan_color) translate([-4,-4, -1]) cube([4, diameter+8, thickness+2]);
+            color(fan_color) translate([diameter,-4, -1]) cube([4, diameter+8, thickness+2]);
+            color(fan_color) translate([-4,-4, -1]) cube([diameter+8, 4, thickness+2]);
+            color(fan_color) translate([-4,diameter, -1]) cube([diameter+8, 4, thickness+2]);
+        }
+        color(fan_color) translate([diameter/2, diameter/2, thickness/2]) rotate([0,0,30]) 
+            cylinder_fillet_inside(h=thickness, r=hub_size/2, top=1, bottom=1, $fn=90, fillet_fn=90, center=true);
+    }
+}
+
+
+/*
+           NAME: fan_cover
+    DESCRIPTION: creates fan covers for fan openings
+           TODO: none
+
+          USAGE: fan_cover(size, thick, style)
+
+                           size = size of fan
+                          thick = thickness of cover
+                          style = "fan_open", "fan_1", "fan_2", "fan_hex"
+*/
+
+module fan_cover(size, thick, style) {
+    difference() {
+        color("grey", 1) slab([size, size, thick], 3);
+        color("grey", 1) fan_mask(size, thick, style);
+    }
+}
+
+
+/*
+    DESCRIPTION: creates fan masks for openings
+           TODO: 
+
+          USAGE: fan_mask(size, thick, style)
+
+                          size = size of fan
+                         thick = thickness of cover
+                         style = "fan_open", "fan_1", "fan_2", "fan_hex"
+*/
+
+module fan_mask(size, thick, style) {
+
+    hole_pos = size == 30 ? 3 :
+        size == 40 ? 4 :
+        size == 50 || size == 60 || size == 70 ? 5 :
+        size >= 80 ? 3.75 : 3.75;
+    $fn = 90;
+    adj = .01;
+
+    if(style == "fan_open") {
+        
+        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-1);
+        // mount holes
+        translate([size-hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+        translate([size-hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+        translate([hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+        translate([hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+    }
+    if(style == "fan_1" && size == 30) {
+        
+        union() {
+            difference() {
+                union () {
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-2);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-8);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-11);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-17);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-20);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-25);
+                    }
+                    // mount holes
+                    translate([size-hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([size-hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                }
+                translate([5, 4, -2]) rotate([0, 0, 45]) cube([size, 1.5, thick+4]);
+                translate([4, size-5, -2]) rotate([0, 0, -45]) cube([size, 1.5, thick+4]);
+            }
+        }
+    }
+    if(style == "fan_1" && size == 40) {
+        
+        union() {
+            difference() {
+                union () {
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-2);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-8);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-11);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-17);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-20);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-25);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-28);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-35);
+                    }
+                    // mount holes
+                    translate([size-hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([size-hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                }
+                translate([6.5, 5.5, -2]) rotate([0, 0, 45]) cube([size, 1.5, thick+4]);
+                translate([5, size-6, -2]) rotate([0, 0, -45]) cube([size, 1.5, thick+4]);
+            }
+        }
+    }
+    if(style == "fan_1" && (size == 50 || size == 60 || size == 70)) {
+
+        union() {
+            difference() {
+                union () {
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-2);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-14);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-18);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-30);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-34);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-46);
+                    }
+                    if(size > 50) {
+                        difference() {
+                            translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-50);
+                            translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-59);
+                        }
+                    }
+                    // mount holes
+                    translate([size-hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([size-hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                }
+                translate([8.5, 7, -2]) rotate([0, 0, 45]) cube([size > 60 ? size+4 : size+1, 2, thick+4]);
+                translate([6.5, size-8, -2]) rotate([0, 0, -45]) cube([size > 60 ? size+4 : size+1, 2, thick+4]);
+            } 
+        }
+    }
+    if(style == "fan_1" && size >= 80) {
+
+        union() {
+            difference() {
+                union () {
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-2);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-9);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-14);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-21);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-26);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-33);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-38);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-45);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-50);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-57);
+                    }
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-62);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-68);
+                    }
+                    if(size == 92) {
+                    difference() {
+                        translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-74);
+                        translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-80);
+                    }
+                        difference() {
+                            translate([size/2, size/2, -1]) cylinder(h=thick+2, d=size-85);
+                            translate([size/2, size/2, -2]) cylinder(h=thick+4, d=size-91);
+                        }
+                    }
+                    // mount holes
+                    translate([size-hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([size-hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+                    translate([hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+                }
+                translate([6.5, 4.25, -2]) rotate([0, 0, 45]) cube([size*1.2, 3, thick+4]);
+                translate([4.25, size-6.5, -2]) rotate([0, 0, -45]) cube([size*1.2, 3, thick+4]);
+            }
+        }
+    }
+    if(style == "fan_2") {
+
+        inner = size == 30 ? 24 :
+            size == 40 ? 32 :
+            size == 50 ? 40 :
+                size == 60 ? 50 :
+                size == 70 ? 61.9 :
+                    size == 80 ? 71.5 :
+                    size * 0.8; // Use 80% as default
+
+        rings = size <= 40 ? 4 : 6;
+        bar_size = size <= 40 ? 2 : 3;
+
+        screw_offset = inner / 2;
+        center_point = size * 0.5;
+        base_ring_size = size * 0.95;
+        rings_spacing = size / rings;
+
+        translate([size/2, size/2, -1])
+        union() {
+            translate([screw_offset, screw_offset, (thick+2)/2]) cylinder(d=3, h=thick+2, center=true);
+            translate([-screw_offset, screw_offset, (thick+2)/2]) cylinder(d=3, h=thick+2, center=true);
+            translate([screw_offset, -screw_offset, (thick+2)/2]) cylinder(d=3, h=thick+2, center=true);
+            translate([-screw_offset, -screw_offset, (thick+2)/2]) cylinder(d=3, h=thick+2, center=true);
+
+            difference() {
+            union() {
+                for(i=[inner:-rings_spacing:0]) {
+                    difference() {
+                        cylinder(d=base_ring_size - i, h=thick+2);
+                        translate([0, 0, -1]) cylinder(d=base_ring_size - i - (rings_spacing/2), h=thick+4);
+                    }
+                }
+            }
+
+            translate([0, 0, 11]) 
+                union() {
+                    cylinder(d=bar_size*2+0.1, thick+2); // Add a circle to prevent any tiny holes around cross bar
+                    rotate([0, 0, 45]) cube([size, bar_size, thick+4], center=true);
+                    rotate([0, 0, 45]) cube([bar_size, size, thick+4], center=true);
+                }
+            }
+        }
+    }
+    if(style == "fan_hex") {
+        
+        hex_pos = size == 30 ? [-11.75, -4.5, 0] :
+            size == 40 ? [-14, -11.25, 0] :
+            size == 50 ? [-16, -6.5, 0] : 
+            size == 60 ? [-11, -1.5, 0] : 
+            size == 70 ? [-13, -3.5, 0] :
+            size >= 80 ? [-8.25, -3.5, 0] : [-9, -4, 0];
+
+        union() {
+            difference () {
+                translate([1+(size-2)/2, 1+(size-2)/2, -1]) cylinder(h=thick+2, d=size-2);
+                union() {
+                    difference() {
+                        translate([1+(size-2)/2, 1+(size-2)/2, -1-adj]) cylinder(h=thick+3, d=size-2);
+                        translate(hex_pos) vent_hex(15, 8, thick+4, 12, 2, "horizontal");
+                    }
+                }
+            }
+        }
+        // mount holes
+        translate([size-hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+        translate([size-hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+        translate([hole_pos, size-hole_pos, -1]) cylinder(h=thick+2, d=3);
+        translate([hole_pos, hole_pos, -1]) cylinder(h=thick+2, d=3);
+    }
+}

lib/fastener.scad

@@ -0,0 +1,48 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    m_insert(type="M3", icolor = "#ebdc8b")
+
+*/
+
+
+/*
+           NAME: fan_cover
+    DESCRIPTION: creates fan covers for fan openings
+           TODO: none
+
+          USAGE: m_insert(type="M3", icolor = "#ebdc8b")
+
+                           type = "M3"
+                         icolor = color of insert
+*/
+
+module m_insert(type="M3", icolor = "#ebdc8b") {    //#f4e6c3, #ebdc8b 
+    
+    odiam = type == "M3" ? 4.2 : 3.5;
+    idiam = type == "M3" ? 3 : 2.5;
+    iheight = 4;
+
+    difference() {
+        color(icolor,.6) cylinder(d=odiam, h=iheight);
+        color(icolor,.6) translate([0,0,-1]) cylinder(d=idiam, h=iheight+2);
+    }
+    for(bearing = [0:10:360]) {
+        color(icolor) translate([-.25+(odiam/2)*cos(bearing), -.25+(odiam/2)*sin(bearing), iheight-1.5]) 
+            cube([.5, .5, 1.5]);
+    }
+}

lib/feet.scad

@@ -0,0 +1,42 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    feet (diameter, height)
+
+*/
+
+
+/*
+           NAME: feet
+    DESCRIPTION: creates simple case feet
+           TODO: none
+
+          USAGE: feet (diameter, height)
+
+                       diameter = size of fan
+                         height = thickness of cover
+
+*/
+
+module feet (diameter, height) {
+
+    difference (){ 
+        cylinder (d=diameter,h=height);
+        translate([0,0,-1]) cylinder (d=3, h=height+2,$fn=90);
+        translate ([0,0,-1]) cylinder(r=3.35,h=height-3,$fn=6);
+    }
+}

lib/hd.scad

@@ -0,0 +1,820 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    hd25(orientation, height, mask)
+    hd25_tab(side)
+    hd25_vtab(side)
+    hd35(orientation, mask)
+    hdd35_25holder(length)
+    hd35_tab(side)
+    hd35_vtab(side)
+    hd_bottom_holes(hd, orientation, side, thick)
+    hd_mount(hd, orientation, position, side)
+
+*/
+
+
+/*
+           NAME: hd25
+    DESCRIPTION: creates 2.5" hard drive model
+           TODO: none
+
+          USAGE: hd25(orientation, height, mask)
+
+                      orientation = "landscape", "portrait"
+                           height = drive height
+                          mask[0] = true enables component mask
+                          mask[1] = mask length
+                          mask[2] = mask setback
+                          mask[3] = mstyle "default", "bottom", "side", "both"
+*/
+
+module hd25(orientation, height, mask) {
+
+    hd25_x = 100;
+    hd25_y = 69.85;
+    hd25_z = height;
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true) {
+        if(orientation == "landscape" && (mstyle == "side" || mstyle == "both" || mstyle == "default")) {
+            translate([0, msetback, 0]) hd_holes(2.5, "landscape", "left", mlength);
+            translate([0, -msetback, 0]) hd_holes(2.5, "landscape", "right", mlength);
+        }
+        if(orientation == "landscape" && (mstyle == "bottom" || mstyle == "both")) {
+            translate([0, 0, msetback]) hd_holes(2.5, "landscape", "bottom", mlength);
+        }
+        if(orientation == "portrait" && (mstyle == "side" || mstyle == "both" || mstyle == "default")) {
+            translate([msetback, 0, 0]) hd_holes(2.5, "portrait", "left", mlength);
+            translate([-msetback, 0, 0]) hd_holes(2.5, "portrait", "right", mlength);
+        }
+        if(orientation == "portrait" && (mstyle == "bottom" || mstyle == "both")) {
+            translate([0, 0, -mlength+msetback]) hd_holes(2.5, "portrait", "bottom", mlength);
+        }
+    }
+    if(enablemask == false) {
+        if(orientation == "landscape") {
+            difference() {
+                color("LightGrey",.6) cube([hd25_x,hd25_y,hd25_z]);
+
+                // bottom screw holes
+                color("Black",.6) translate([9.4,4.07,-adj]) cylinder(d=3,h=3);
+                color("Black",.6) translate([86,4.07,-adj]) cylinder(d=3,h=3);
+                color("Black",.6) translate([86,65.79,-adj]) cylinder(d=3,h=4);
+                color("Black",.6) translate([9.4,65.79,-adj]) cylinder(d=3,h=4);
+
+                // side screw holes
+                color("Black",.6) translate([9.4,-adj,3]) rotate([-90,0,0]) cylinder(d=3,h=3);
+                color("Black",.6) translate([86,-adj,3]) rotate([-90,0,0])  cylinder(d=3,h=3);
+                color("Black",.6) translate([86,hd25_y+adj,3]) rotate([90,0,0])  cylinder(d=3,h=3);
+                color("Black",.6) translate([9.4,hd25_y+adj,3]) rotate([90,0,0])  cylinder(d=3,h=3);
+
+                // connector opening
+                color("LightSlateGray",.6) translate([hd25_x-5,11,-1]) cube([5+adj,32,5+adj]);
+            }
+        }
+        if(orientation == "portrait") {
+            translate([0,hd25_x,0]) rotate([0,0,270])
+                difference() {
+                    color("LightGrey",.6) cube([hd25_x,hd25_y,hd25_z]);
+
+                    // bottom screw holes
+                    color("Black",.6) translate([9.4,4.07,-adj]) cylinder(d=3,h=3);
+                    color("Black",.6) translate([86,4.07,-adj]) cylinder(d=3,h=3);
+                    color("Black",.6) translate([86,65.79,-adj]) cylinder(d=3,h=4);
+                    color("Black",.6) translate([9.4,65.79,-adj]) cylinder(d=3,h=4);
+
+                    // side screw holes
+                    color("Black",.6) translate([9.4,-adj,3]) rotate([-90,0,0]) cylinder(d=3,h=3);
+                    color("Black",.6) translate([86,-adj,3]) rotate([-90,0,0])  cylinder(d=3,h=3);
+                    color("Black",.6) translate([86,hd25_y+adj,3]) rotate([90,0,0])  cylinder(d=3,h=3);
+                    color("Black",.6) translate([9.4,hd25_y+adj,3]) rotate([90,0,0])  cylinder(d=3,h=3);
+
+                    // connector opening
+                    color("LightSlateGray",.6) translate([hd25_x-5,11,-1]) cube([5+adj,32,5+adj]);
+                }
+        }
+    }
+}
+
+
+/*
+           NAME: hd25_tab
+    DESCRIPTION: creates 2.5" hard drive tabs for horizontal mounting
+           TODO: none
+
+          USAGE: hd25_tab(side)
+
+                          side = "left", "right"
+*/
+
+module hd25_tab(side) {
+
+    width = 15;
+    l_width = 26;
+    depth = 15;
+    height = 4;
+    fillet = 2;
+    hole = 3.6;
+    length = 3;
+
+    adj = .01;
+    $fn = 90;
+
+    if(side == "left") {
+        difference() {
+            union() {
+                translate([0,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([-height,-depth/2,0]) cube([height,depth,height]);
+                translate([adj,-5.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,7.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+            }
+            translate([4.07,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-height-adj,(width/2)-(length/2)-depth/2,3]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+            translate([-height-adj,(width/2)-(length/2)-depth/2,21]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+    if(side == "right") {
+        difference() {
+            union() {
+                translate([height,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([0,-depth/2,0]) cube([height,depth,height]);
+                translate([adj,-7.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,5.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+            }
+            translate([-4.07,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-adj,(width/2)-(length/2)-depth/2,3]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+            translate([-adj,(width/2)-(length/2)-depth/2,21]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+}
+
+
+/*
+           NAME: hd25_vtab
+    DESCRIPTION: creates 2.5" hard drive tabs for vertical mounting
+           TODO: none
+
+          USAGE: hd25_vtab(side)
+
+                           side = "left", "right"
+*/
+
+module hd25_vtab(side) {
+    
+    width = 15;
+    l_width = 16;
+    depth = 15;
+    height = 4;
+    fillet = 2;
+    hole = 3.6;
+    length = 3;
+
+    adj = .01;
+    $fn = 90;
+
+    if(side == "left") {
+        difference() {
+            union() {
+                translate([0,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([-height,-depth/2,0]) cube([height,depth,height]);
+                translate([adj,-5.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,7.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+            }
+            translate([3,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-height-adj,1.5+(width/2)-(length/2)-depth/2,5.57]) rotate([90,90,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+    if(side == "right") {
+        difference() {
+            union() {
+                translate([height,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([0,-depth/2,0]) cube([height,depth,height]);
+                translate([adj,-7.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,5.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+            }
+            translate([-3,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-adj,1.5+(width/2)-(length/2)-depth/2,5.57]) rotate([90,90,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+}
+
+
+/*
+           NAME: hd35
+    DESCRIPTION: creates 3.5" hard drive model
+           TODO: none
+
+          USAGE: hd35(orientation, mask)
+
+                      orientation = "landscape", "portrait"
+                          mask[0] = true enables component mask
+                          mask[1] = mask length
+                          mask[2] = mask setback
+                          mask[3] = mstyle "default", "bottom", "side", "both"
+*/
+
+module hd35(orientation, mask) {
+    
+    hd35_x = 147;
+    hd35_y = 101.6;
+    hd35_z = 26.1;
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true) {
+        if(orientation == "landscape" && (mstyle == "side" || mstyle == "both" || mstyle == "default")) {
+            translate([0, msetback, 0]) hd_holes(3.5, "landscape", "left", mlength);
+            translate([0, -msetback, 0]) hd_holes(3.5, "landscape", "right", mlength);
+        }
+        if(orientation == "landscape" && (mstyle == "bottom" || mstyle == "both")) {
+            translate([0, 0, msetback]) hd_holes(3.5, "landscape", "bottom", mlength);
+        }
+        if(orientation == "portrait" && (mstyle == "side" || mstyle == "both" || mstyle == "default")) {
+            translate([msetback, 0, 0]) hd_holes(3.5, "portrait", "left", mlength);
+            translate([-msetback, 0, 0]) hd_holes(3.5, "portrait", "right", mlength);
+        }
+        if(orientation == "portrait" && (mstyle == "bottom" || mstyle == "both")) {
+            translate([0, 0, -mlength+msetback]) hd_holes(3.5, "portrait", "bottom", mlength);
+        }
+    }
+    if(enablemask == false) {
+        if(orientation == "landscape") {
+            difference() {
+                color("LightGrey",.6) cube([hd35_x,hd35_y,hd35_z]);
+
+                // bottom screw holes
+                color("Black",.6) translate([29.52,3.18,-adj]) cylinder(d=3,h=3+adj);
+                color("Black",.6) translate([61.27,3.18,-adj]) cylinder(d=3,h=3+adj);
+                color("Black",.6) translate([105.72,3.18,-adj]) cylinder(d=3,h=3+adj);
+                color("Black",.6) translate([29.52,98.43,-adj]) cylinder(d=3,h=3+adj);
+                color("Black",.6) translate([61.27,98.43,-adj]) cylinder(d=3,h=3+adj);
+                color("Black",.6) translate([105.72,98.43,-adj]) cylinder(d=3,h=3+adj);
+
+                // side screw holes
+                color("Black",.6) translate([16.9,-adj,6.35]) rotate([-90,0,0]) cylinder(d=3,h=3);
+                color("Black",.6) translate([76.6,-adj,6.35]) rotate([-90,0,0])  cylinder(d=3,h=3);
+                color("Black",.6) translate([118.5,-adj,6.35]) rotate([-90,0,0])  cylinder(d=3,h=3);
+                color("Black",.6) translate([118.5,hd35_y+adj,6.35]) rotate([90,0,0]) cylinder(d=3,h=3);
+                color("Black",.6) translate([76.6,hd35_y+adj,6.35]) rotate([90,0,0]) cylinder(d=3,h=3);
+                color("Black",.6) translate([16.9,hd35_y+adj,6.35]) rotate([90,0,0]) cylinder(d=3,h=3);
+
+                // connector opening
+                color("LightSlateGray",.6) translate([hd35_x-5,11,-1]) cube([5+adj,32,5+adj]);
+            }
+        }
+        if(orientation == "portrait") {
+            translate([0,hd35_x,0]) rotate([0,0,270])
+                difference() {
+                    color("LightGrey",.6) cube([hd35_x,hd35_y,hd35_z]);
+
+                    // bottom screw holes
+                    color("Black",.6) translate([29.52,3.18,-adj]) cylinder(d=3,h=3+adj);
+                    color("Black",.6) translate([61.27,3.18,-adj]) cylinder(d=3,h=3+adj);
+                    color("Black",.6) translate([105.72,3.18,-adj]) cylinder(d=3,h=3+adj);
+                    color("Black",.6) translate([29.52,98.43,-adj]) cylinder(d=3,h=3+adj);
+                    color("Black",.6) translate([61.27,98.43,-adj]) cylinder(d=3,h=3+adj);
+                    color("Black",.6) translate([105.72,98.43,-adj]) cylinder(d=3,h=3+adj);
+
+                    // side screw holes
+                    color("Black",.6) translate([16.9,-adj,6.35]) rotate([-90,0,0]) cylinder(d=3,h=3);
+                    color("Black",.6) translate([76.6,-adj,6.35]) rotate([-90,0,0])  cylinder(d=3,h=3);
+                    color("Black",.6) translate([118.5,-adj,6.35]) rotate([-90,0,0])  cylinder(d=3,h=3);
+                    color("Black",.6) translate([118.5,hd35_y+adj,6.35]) rotate([90,0,0]) cylinder(d=3,h=3);
+                    color("Black",.6) translate([76.6,hd35_y+adj,6.35]) rotate([90,0,0]) cylinder(d=3,h=3);
+                    color("Black",.6) translate([16.9,hd35_y+adj,6.35]) rotate([90,0,0]) cylinder(d=3,h=3);
+
+                    // connector opening
+                    color("LightSlateGray",.6) translate([hd35_x-5,11,-1]) cube([5+adj,32,5+adj]);
+                }
+        }
+    }
+}
+
+
+/*
+           NAME: hd35_25holder
+    DESCRIPTION: 3.5" hdd to 2.5" hdd holder
+           TODO: none
+
+          USAGE: hdd35_25holder(length, width=101.6)
+
+                      length = length of holder min. 145mm for 3.5" drive
+*/
+
+module hd35_25holder(length, width=101.6) {
+
+    wallthick = 3;
+    floorthick = 2;
+    hd35_x = length;                    // 145mm for 3.5" drive
+    hd35_y = width;
+    hd35_z = 12;
+    hd25_x = 100;
+    hd25_y = 69.85;
+    hd25_z = 9.5;
+    hd25_xloc = 2;                     // or (hd35_x-hd25_x)/2
+    hd25_yloc = (hd35_y-hd25_y)/2;
+    hd25_zloc = 9.5;
+    adj = .1;    
+    $fn=90;
+
+    difference() {
+        union() {
+            difference() {
+                translate([(hd35_x/2),(hd35_y/2),(hd35_z/2)])
+                    cube_fillet_inside([hd35_x,hd35_y,hd35_z], 
+                        vertical=[3,3,3,3], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+                translate([(hd35_x/2),(hd35_y/2),(hd35_z/2)+floorthick])
+                    cube_fillet_inside([hd35_x-(wallthick*2),hd35_y-(wallthick*2),hd35_z], 
+                        vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+
+                // end trim
+                translate([-adj,5,wallthick+2]) cube([wallthick+(adj*2),hd35_y-10,10]);
+                translate([hd35_x-wallthick-adj,5,wallthick+2]) cube([wallthick+(adj*2),hd35_y-10,10]);
+
+                // bottom vents
+                for ( r=[15:40:hd35_x-40]) {
+                    for (c=[hd35_y-76:4:75]) {
+                        translate ([r,c,-adj]) cube([35,2,wallthick+(adj*2)]);
+                    }
+                }
+            }
+            // 2.5 hdd bottom support
+            translate([9.4+hd25_xloc,4.07+hd25_yloc,floorthick-adj]) cylinder(d=8,h=4);
+            translate([86+hd25_xloc,4.07+hd25_yloc,floorthick-adj]) cylinder(d=8,h=4);
+            translate([86+hd25_xloc,65.79+hd25_yloc,floorthick-adj]) cylinder(d=8,h=4);
+            translate([9.4+hd25_xloc,65.79+hd25_yloc,floorthick-adj]) cylinder(d=8,h=4);
+
+        // side nut holder support    
+        translate([16,wallthick-adj,7]) rotate([-90,0,0]) cylinder(d=10,h=3);
+        translate([76,wallthick-adj,7]) rotate([-90,0,0])  cylinder(d=10,h=3);
+            if(length >= 120) {
+                translate([117.5,wallthick-adj,7]) rotate([-90,0,0])  cylinder(d=10,h=3);
+                translate([117.5,hd35_y-wallthick+adj,7]) rotate([90,0,0])  cylinder(d=10,h=3);
+            }
+        translate([76,hd35_y-wallthick+adj,7]) rotate([90,0,0])  cylinder(d=10,h=3);
+        translate([16,hd35_y-wallthick+adj,7]) rotate([90,0,0])  cylinder(d=10,h=3);
+        
+        // bottom-side support
+        translate([wallthick,wallthick,floorthick-2]) rotate([45,0,0]) cube([hd35_x-(wallthick*2),3,3]);
+        translate([wallthick,hd35_y-wallthick+adj,floorthick-2]) rotate([45,0,0]) cube([hd35_x-(wallthick*2),3,3]);
+
+        }
+        // bottom screw holes
+        translate([9.4+hd25_xloc,4.07+hd25_yloc,-adj]) cylinder(d=3,h=(floorthick*3)+(adj*2));
+        translate([86+hd25_xloc,4.07+hd25_yloc,-adj]) cylinder(d=3,h=(floorthick*3)+(adj*2));
+        translate([86+hd25_xloc,65.79+hd25_yloc,-adj]) cylinder(d=3,h=(floorthick*3)+(adj*2));
+        translate([9.4+hd25_xloc,65.79+hd25_yloc,-adj]) cylinder(d=3,h=(floorthick*3)+(adj*2));
+
+         // countersink holes
+        translate([9.4+hd25_xloc,4.07+hd25_yloc,-adj]) cylinder(d1=6.5, d2=3, h=3);
+        translate([86+hd25_xloc,4.07+hd25_yloc,-adj]) cylinder(d1=6.5, d2=3, h=3);
+        translate([86+hd25_xloc,65.79+hd25_yloc,-adj]) cylinder(d1=6.5, d2=3, h=3);
+        translate([9.4+hd25_xloc,65.79+hd25_yloc,-adj]) cylinder(d1=6.5, d2=3, h=3);
+
+        // side screw holes
+        translate([16,-adj,7]) rotate([-90,0,0]) cylinder(d=3.6,h=7);
+        translate([76,-adj,7]) rotate([-90,0,0])  cylinder(d=3.6,h=7);
+        translate([117.5,-adj,7]) rotate([-90,0,0])  cylinder(d=3.6,h=7);
+        translate([117.5,hd35_y+adj,7]) rotate([90,0,0])  cylinder(d=3.6,h=7);
+        translate([76,hd35_y+adj,7]) rotate([90,0,0])  cylinder(d=3.6,h=7);
+        translate([16,hd35_y+adj,7]) rotate([90,0,0])  cylinder(d=3.6,h=7);
+
+        // side nut trap
+        translate([16,wallthick-adj,7]) rotate([-90,0,0]) cylinder(r=3.30,h=5,$fn=6);
+        translate([76,wallthick-adj,7]) rotate([-90,0,0])  cylinder(r=3.30,h=5,$fn=6);
+        translate([117.5,wallthick-adj,7]) rotate([-90,0,0])  cylinder(r=3.30,h=5,$fn=6);
+        translate([117.5,hd35_y-wallthick-adj,7]) rotate([90,0,0])  cylinder(r=3.30,h=5,$fn=6);
+        translate([76,hd35_y-wallthick-adj,7]) rotate([90,0,0])  cylinder(r=3.30,h=5,$fn=6);
+        translate([16,hd35_y-wallthick-adj,7]) rotate([90,0,0])  cylinder(r=3.30,h=5,$fn=6);
+    }
+}
+
+
+/*
+           NAME: hd35_tab
+    DESCRIPTION: creates 3.5" hard drive tabs for horizontal mounting
+           TODO: none
+
+          USAGE: hd35_tab(side)
+
+                          side = "left", "right"
+*/
+
+module hd35_tab(side) {
+
+    width = 15;
+    l_width = 46;
+    depth = 15;
+    height = 4;
+    fillet = 2;
+    hole = 3.6;
+    length = 3;
+
+    adj = .01;
+    $fn = 90;
+
+    if(side == "left") {
+        difference() {
+            union() {
+                translate([0,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([-height,-depth/2,0]) cube([height,depth,height]);
+
+                translate([adj,-5.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height+20],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,7.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height+20],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+
+            }
+            translate([3.18,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-height-adj,(width/2)-(length/2)-depth/2,6.35]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+            translate([-height-adj,(width/2)-(length/2)-depth/2,38.35]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+    if(side == "right") {
+        difference() {
+            union() {
+                translate([height,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([0,-depth/2,0]) cube([height,depth,height]);
+
+                translate([adj,-7.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height+20],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,5.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height+20],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+
+            }
+            translate([-3.18,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-adj,(width/2)-(length/2)-depth/2,6.35]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+            translate([-adj,(width/2)-(length/2)-depth/2,38.35]) rotate([90,0,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+}
+
+
+/*
+           NAME: hd35_vtab
+    DESCRIPTION: creates 3.5" hard drive tabs for vertical mounting
+           TODO: none
+
+          USAGE: hd35_vtab(side)
+
+                           side = "left", "right"
+*/
+
+module hd35_vtab(side) {
+
+    width = 15;
+    l_width = 16;
+    depth = 15;
+    height = 4;
+    fillet = 2;
+    hole = 3.6;
+    length = 3;
+
+    adj = .01;
+    $fn = 90;
+    if(side == "left") {
+        difference() {
+            union() {
+                translate([0,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([-height,-depth/2,0]) cube([height,depth,height]);
+                translate([adj,-5.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,7.5,depth]) 
+                    rotate([90,0,0]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+            }
+            translate([3,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-height-adj,1.5+(width/2)-(length/2)-depth/2,5.57]) rotate([90,90,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+    if(side == "right") {
+        difference() {
+            union() {
+                translate([height,-depth/2,0]) rotate([0,-90,0]) 
+                    slab_r([l_width,depth,height], [fillet,fillet,fillet,fillet]);
+                translate([0,-depth/2,0]) cube([height,depth,height]);
+                translate([adj,-7.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+                translate([adj,5.5,depth]) 
+                    rotate([90,0,180]) 
+                        linear_extrude(height = 2) 
+                            polygon(points = [ [-height,height-5],
+                                [-depth+4,-depth], 
+                                [-height,-depth]]);
+            }
+            translate([-3,0,-adj]) rotate([0,0,0]) cylinder(d=hole, h=3);
+            translate([-adj,1.5+(width/2)-(length/2)-depth/2,5.57]) rotate([90,90,90]) slot(hole,length,height+(2*adj));
+        }
+    }
+}
+
+
+/*
+           NAME: hd_holes
+    DESCRIPTION: creates 2.5" and 3.5" hard drive hole mask for mounting
+           TODO: none
+
+          USAGE: hd_bottom_holes(hd, orientation, side, thick)
+
+                                 hd = 2.5, 3.5
+                        orientation = "portrait", "landscape"
+                               side = "left", "right", "both", "bottom", "all"
+                              thick = floor thickness
+*/
+
+module hd_holes(hd, orientation, side, thick) {
+
+    hd25_x = 100;
+    hd25_y = 69.85;
+    hd35_x = 147;
+    hd35_y = 101.6;
+    hd35_z = 26.1;
+    adj = .01;
+    $fn = 90;
+
+    if(hd == 2.5) {
+        if(orientation == "portrait") {
+            translate([0,hd25_x,0]) rotate([0,0,270]) union() {
+                if(side == "left" || side == "both" || side == "all") {
+                    translate([9.4,-thick,3]) rotate([270,0,0]) cylinder(d=3.6,h=thick);
+                    translate([86,-thick,3]) rotate([270,0,0]) cylinder(d=3.6,h=thick);
+                }
+                if(side == "right" || side == "both" || side == "all") {
+                    translate([9.4,hd25_y+thick,3]) rotate([90,0,0]) cylinder(d=3.6,h=thick);
+                    translate([86,hd25_y+thick,3]) rotate([90,0,0]) cylinder(d=3.6,h=thick);
+                }
+                if(side == "bottom" || side == "all") {
+                    translate([9.4,4.07,0]) cylinder(d=3.6,h=thick);
+                    translate([86,4.07,0]) cylinder(d=3.6,h=thick);
+                    translate([86,65.79,0]) cylinder(d=3.6,h=thick);
+                    translate([9.4,65.79,0]) cylinder(d=3.6,h=thick);
+                }
+            }
+        }
+        if(orientation == "landscape") {
+            if(side == "left" || side == "both" || side == "all") {
+                translate([9.4,-thick,3]) rotate([270,0,0]) cylinder(d=3.6,h=thick);
+                translate([86,-thick,3]) rotate([270,0,0]) cylinder(d=3.6,h=thick);
+            }
+            if(side == "right" || side == "both" || side == "all") {
+                translate([9.4,hd25_y+thick,3]) rotate([90,0,0]) cylinder(d=3.6,h=thick);
+                translate([86,hd25_y+thick,3]) rotate([90,0,0]) cylinder(d=3.6,h=thick);
+            }
+            if(side == "bottom" || side == "all") {
+                translate([9.4,4.07,-thick]) cylinder(d=3.6,h=thick);
+                translate([86,4.07,-thick]) cylinder(d=3.6,h=thick);
+                translate([86,65.79,-thick]) cylinder(d=3.6,h=thick);
+                translate([9.4,65.79,-thick]) cylinder(d=3.6,h=thick);
+            }
+        }
+    }
+    if(hd == 3.5) {
+        if(orientation == "portrait") {
+            translate([0,hd35_x,0]) rotate([0,0,270]) union() {
+                if(side == "left" || side == "both" || side == "all") {
+                    translate([16.9,-thick,6.35]) rotate([270,0,0]) cylinder(d=3,h=thick);
+                    translate([76.6,-thick,6.35]) rotate([270,0,0])  cylinder(d=3,h=thick);
+                    translate([118.5,-thick,6.35]) rotate([270,0,0])  cylinder(d=3,h=thick);
+                }
+                if(side == "right" || side == "both" || side == "all") {
+                    translate([118.5,hd35_y+thick,6.35]) rotate([90,0,0]) cylinder(d=3,h=thick);
+                    translate([76.6,hd35_y+thick,6.35]) rotate([90,0,0]) cylinder(d=3,h=thick);
+                    translate([16.9,hd35_y+thick,6.35]) rotate([90,0,0]) cylinder(d=3,h=thick);
+                }
+                if(side == "bottom" || side == "all") {
+                    // landscape 3.5" bottom screw holes
+                    translate([29.52,3.18,0]) cylinder(d=3.6,h=thick);
+                    translate([61.27,3.18,0]) cylinder(d=3.6,h=thick);
+                    translate([105.72,3.18,0]) cylinder(d=3.6,h=thick);
+                    translate([29.52,98.43,0]) cylinder(d=3.6,h=thick);
+                    translate([61.27,98.43,0]) cylinder(d=3.6,h=thick);
+                    translate([105.72,98.43,0]) cylinder(d=3.6,h=thick);
+                }
+            }
+        }
+        if(orientation == "landscape") {
+            if(side == "left" || side == "both" || side == "all") {
+                translate([16.9,-thick,6.35]) rotate([270,0,0]) cylinder(d=3,h=thick);
+                translate([76.6,-thick,6.35]) rotate([270,0,0])  cylinder(d=3,h=thick);
+                translate([118.5,-thick,6.35]) rotate([270,0,0])  cylinder(d=3,h=thick);
+            }
+            if(side == "right" || side == "both" || side == "all") {
+                translate([118.5,hd35_y+thick,6.35]) rotate([90,0,0]) cylinder(d=3,h=thick);
+                translate([76.6,hd35_y+thick,6.35]) rotate([90,0,0]) cylinder(d=3,h=thick);
+                translate([16.9,hd35_y+thick,6.35]) rotate([90,0,0]) cylinder(d=3,h=thick);
+            }
+            if(side == "bottom" || side == "all") {
+                // landscape 3.5" bottom screw holes
+                translate([29.52,3.18,-thick]) cylinder(d=3.6,h=thick);
+                translate([61.27,3.18,-thick]) cylinder(d=3.6,h=thick);
+                translate([105.72,3.18,-thick]) cylinder(d=3.6,h=thick);
+                translate([29.52,98.43,-thick]) cylinder(d=3.6,h=thick);
+                translate([61.27,98.43,-thick]) cylinder(d=3.6,h=thick);
+                translate([105.72,98.43,-thick]) cylinder(d=3.6,h=thick);
+            }
+        }
+    }
+}
+
+
+/*
+           NAME: hd_mount
+    DESCRIPTION: creates 2.5" and 3.5" hard drive mounts
+           TODO: none
+
+          USAGE: hd_mount(hd, orientation, position, side)
+
+                          hd = 2.5, 3.5
+                 orientation = "portrait", "landscape"
+                    position = "vertical", "horizontal"
+                        side = "left", "right"
+*/
+
+module hd_mount(hd, orientation, position, side) {
+
+    adj = .01;
+    $fn = 90;
+
+    if(hd == 2.5) {
+        if(orientation == "portrait") {
+            if(position == "vertical") {
+                if(side == "left") {
+                    translate([0,14,0]) rotate([0,0,0]) hd25_vtab("right");
+                    translate([0,90.6,0]) rotate([0,0,0]) hd25_vtab("right");
+                }
+                else {  // right
+                    translate([0,14,0]) rotate([0,0,0]) hd25_vtab("left");
+                    translate([0,90.6,0]) rotate([0,0,0]) hd25_vtab("left");
+                }
+            }
+            else {
+                translate([-.5,14,0]) hd25_tab("left");
+                translate([-.5,90.6,0]) hd25_tab("left");
+                translate([70.35,14,0]) hd25_tab("right");
+                translate([70.35,90.6,0]) hd25_tab("right");
+            }
+        }
+        if(orientation == "landscape") {
+            if(position == "vertical") {
+                if(side == "left") {
+                    translate([9.4,0,0]) rotate([0,0,90]) hd25_vtab("right");
+                    translate([86,0,0])  rotate([0,0,90]) hd25_vtab("right");
+                }
+                else {  // right
+                    translate([9.4,0,0]) rotate([0,0,90]) hd25_vtab("left");
+                    translate([86,0,0])  rotate([0,0,90]) hd25_vtab("left");
+                }
+            }
+            else {
+                translate([9.4,4.07-4.5,0]) rotate([0,0,90]) hd25_tab("left");
+                translate([86,4.07-4.5,0])  rotate([0,0,90]) hd25_tab("left");
+                translate([86,65.79+4.5,0]) rotate([0,0,90]) hd25_tab("right");
+                translate([9.4,65.79+4.5,0]) rotate([0,0,90]) hd25_tab("right");
+            }
+        }
+    }
+    if(hd == 3.5) {
+        if(orientation == "portrait") {
+            if(position == "vertical") {
+                if(side == "left") {
+                    translate([0,41.28,0]) rotate([0,0,0]) hd35_vtab("right");
+                    translate([0,41.28+44.45,0]) rotate([0,0,0]) hd35_vtab("right");
+                    translate([0,41.28+76.20,0]) rotate([0,0,0]) hd35_vtab("right");
+                }
+                else {  // right
+                    translate([0,41.28,0]) rotate([0,0,0]) hd35_vtab("left");
+                    translate([0,41.28+44.45,0]) rotate([0,0,0]) hd35_vtab("left");
+                    translate([0,41.28+76.20,0]) rotate([0,0,0]) hd35_vtab("left");
+                }
+            }
+            else {
+                translate([-.5,28.5,0]) hd35_tab("left");
+                translate([-.5,69.75,0]) hd35_tab("left");
+                translate([-.5,130.1,0]) hd35_tab("left");
+                translate([101.6+.5,28.5,0]) hd35_tab("right");
+                translate([101.6+.5,69.75,0]) hd35_tab("right");
+                translate([101.6+.5,130.1,0]) hd35_tab("right");
+            }
+        }
+        if(orientation == "landscape") {
+            if(position == "vertical") {
+                if(side == "left") {
+                    translate([9.4,0,0]) rotate([0,0,90]) hd35_vtab("right");
+                    translate([86,0,0])  rotate([0,0,90]) hd35_vtab("right");
+                }
+                else {  // right
+                    translate([9.4,0,0]) rotate([0,0,90]) hd35_vtab("left");
+                    translate([86,0,0])  rotate([0,0,90]) hd35_vtab("left");
+                }
+            }
+            else {
+                translate([16.9,-.5,0]) rotate([0,0,90]) hd35_tab("left");
+                translate([76.6,-.5,0])  rotate([0,0,90]) hd35_tab("left");
+                translate([118.5,-.5,0]) rotate([0,0,90]) hd35_tab("left");
+                translate([16.9,101.6-.5,0]) rotate([0,0,90]) hd35_tab("right");
+                translate([76.6,101.6-.5,0]) rotate([0,0,90]) hd35_tab("right");
+                translate([118.5,101.6-.5,0]) rotate([0,0,90]) hd35_tab("right");
+            }
+        }
+    }
+}

lib/holder.scad

@@ -0,0 +1,439 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    nut_holder(nut, style, dia_x, dia_y, height)
+    pcb_holder(size, wallthick)
+    vu_holder(vu_model, side, vesa, cheight)
+
+*/
+
+
+/*
+           NAME: nut_holder
+    DESCRIPTION: creates various nut holders
+           TODO: none
+
+          USAGE: nut_holder(nut, style, dia_x, dia_y, height, mask)
+
+                            nut = "m2", "m2.5", "m3", "m4"
+                          style = "default", "sloped", "trap"
+                          dia_x = top diameter or x size in mm
+                          dia_y = bottom diameter or y size in mm
+                         height = holder height in mm
+                        mask[0] = true enables component mask
+                        mask[1] = mask length
+                        mask[2] = mask setback
+                        mask[3] = mstyle "default"
+
+*/
+
+module nut_holder(nut, style, dia_x, dia_y, height, mask) {
+
+    nuts = [[2,4,1.6],         // m2 size, diameter, height
+            [2.5,5,2],         // m2.5 size, diameter, height
+            [3,5.5,2.4],       // m3 size, diameter, height
+            [4,7,3.2]];        // m4 size, diameter, height
+
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true && mstyle == "default") {
+        if(nut == "m2") {
+            translate([0, 0, -mlength+msetback]) cylinder(d = nuts[0][0], h = mlength);
+        }
+         if(nut == "m2.5") {
+            translate([0, 0, -mlength+msetback]) cylinder(d = nuts[1][0], h = mlength);
+        }
+         if(nut == "m3") {
+            translate([0, 0, -mlength+msetback]) cylinder(d = nuts[2][0], h = mlength);
+        }
+         if(nut == "m4") {
+            translate([0, 0, -mlength+msetback]) cylinder(d = nuts[3][0], h = mlength);
+        }
+    }
+    if(enablemask == false) {
+
+        if( style == "default") {
+            difference() {
+                cylinder(d=dia_x, h=height);
+                if(nut == "m2") {
+                    translate([0, 0, -1]) cylinder(d=nuts[0][0]+.25, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[0][1]*2/sqrt(3), h=height, $fn=6);
+                }
+                if(nut == "m2.5") {
+                    translate([0, 0, -1]) cylinder(d=nuts[1][0]+.25, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[1][1]*2/sqrt(3), h=height, $fn=6);
+                }
+                if(nut == "m3") {
+                    translate([0, 0, -1]) cylinder(d=nuts[2][0]+.5, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[2][1]*2/sqrt(3), h=height, $fn=6);
+                }
+                if(nut == "m4") {
+                    translate([0, 0, -1]) cylinder(d=nuts[3][0]+.5, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[3][1]*2/sqrt(3), h=height, $fn=6);
+                }
+            }
+        }
+        if( style == "sloped") {
+            difference() {
+                cylinder(d2=dia_x, d1=dia_y, h=height);
+                if(nut == "m2") {
+                    translate([0, 0, -1]) cylinder(d=nuts[0][0]+.25, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[0][1]*2/sqrt(3), h=height, $fn=6);
+                }
+                if(nut == "m2.5") {
+                    translate([0, 0, -1]) cylinder(d=nuts[1][0]+.25, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[1][1]*2/sqrt(3), h=height, $fn=6);
+                }
+                if(nut == "m3") {
+                    translate([0, 0, -1]) cylinder(d=nuts[2][0]+.5, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[2][1]*2/sqrt(3), h=height, $fn=6);
+                }
+                if(nut == "m4") {
+                    translate([0, 0, -1]) cylinder(d=nuts[3][0]+.5, h=height+2);
+                    translate([0, 0, 2]) cylinder(d=nuts[3][1]*2/sqrt(3), h=height, $fn=6);
+                }
+            }
+        }
+        if( style == "trap") {
+            if(nut == "m2") {
+                difference() {
+                    translate([-dia_x/2, -dia_y/2, 0]) cube([dia_x, dia_y, height]);
+                    translate([0, 0, -1]) cylinder(d=nuts[0][0]+.25, h=height+2);
+                    translate([0, 0, 2]) rotate([0,0,30]) cylinder(d=nuts[0][1]*2/sqrt(3), h=nuts[0][2], $fn=6);
+                    translate([-nuts[0][1]/2, 0, 2]) cube([nuts[0][1], dia_x, nuts[0][2]]);
+                }
+            }
+            if(nut == "m2.5") {
+                difference() {
+                    translate([-dia_x/2, -dia_y/2, 0]) cube([dia_x, dia_y, height]);
+                    translate([0, 0, -1]) cylinder(d=nuts[1][0]+.325, h=height+2);
+                    translate([0, 0, 2]) rotate([0,0,30]) cylinder(d=nuts[1][1]*2/sqrt(3), h=nuts[1][2], $fn=6);
+                    translate([-nuts[1][1]/2, 0, 2]) cube([nuts[1][1], dia_x, nuts[1][2]]);
+                }
+            }
+            if(nut == "m3") {
+                difference() {
+                    translate([-dia_x/2, -dia_y/2, 0]) cube([dia_x, dia_y, height]);
+                    translate([0, 0, -1]) cylinder(d=nuts[2][0]+.5, h=height+2);
+                    translate([0, 0, 2]) rotate([0,0,30]) cylinder(d=nuts[2][1]*2/sqrt(3), h=nuts[2][2], $fn=6);
+                    translate([-nuts[2][1]/2, 0, 2]) cube([nuts[2][1], dia_x, nuts[2][2]]);
+                }
+            }
+            if(nut == "m4") {
+                difference() {
+                    translate([-dia_x/2, -dia_y/2, 0]) cube([dia_x, dia_y, height]);
+                    translate([0, 0, -1]) cylinder(d=nuts[3][0]+.5, h=height+2);
+                    translate([0, 0, 2]) rotate([0,0,30]) cylinder(d=nuts[3][1]*2/sqrt(3), h=nuts[3][2], $fn=6);
+                    translate([-nuts[3][1]/2, 0, 2]) cube([nuts[3][1], dia_x, nuts[3][2]]);
+                }
+            }
+        }
+    }
+}
+
+
+/*
+           NAME: pcb_holder
+    DESCRIPTION: pcb bottom edge holder
+           TODO: none
+
+          USAGE: pcb_holder(size, wallthick)
+
+                           size = width of holder
+                      wallthick = holder wall thickness
+*/
+
+module pcb_holder(size, wallthick) {
+
+    adj=.01;
+    $fn = 90;    
+    difference() {
+        union() {
+            translate([-1.85,-1.75,0]) cube([size[0]+3.5,5,6]);
+                translate([size[0]+1.65,-5.75,1]) 
+                    rotate([0,-90,0]) 
+                    linear_extrude(height = size[0]+3.5) 
+                        polygon(points = [ [-wallthick/2,-wallthick/2],
+                            [2,wallthick], 
+                            [4,4], 
+                            [-wallthick/2,4]]);
+                translate([-1.85,4,1]) 
+                    rotate([0,-90,180]) 
+                    linear_extrude(height = size[0]+3.5) 
+                        polygon(points = [ [-wallthick/2,-wallthick/2],
+                            [2,wallthick], 
+                            [2,2], 
+                            [-wallthick/2,2]]);
+        }
+        translate([-.5,0,2]) cube([size[0]+1,size[2],5]);
+        translate([6,-adj-5-1.75,-adj]) cube([size[0]-12,14,8]);
+    }
+}
+
+
+/*
+           NAME: vu_holder
+    DESCRIPTION: hk vu5,vu5a,vu7,vu7a display holder
+           TODO: none
+
+          USAGE: vu_holder(vu_model, side, vesa, cheight)
+
+                           vu_model = "vu5", "vu7"
+                               side = "left", "right"
+                               vesa = 75 for vu5, 100 for vu7
+                            cheight = case_z+90 for vu5, case_z+122 for vu7
+*/
+
+module vu_holder(vu_model, side, vesa, cheight) {
+
+//cheight = case_z+90;
+v_fillet = 3;
+    
+vu5_case_x_offset = 6.5;                // for uniform front vu5=6.5, vu7=20
+vu5_pcb_width = 121;
+vu5_pcb_height = 93.31;
+vu5_width = vu5_pcb_width + vu5_case_x_offset;
+vu5_height = vu5_pcb_height + 9.75;
+    
+vu7_case_x_offset = 20;                 // for uniform front vu5=6.5, vu7=20
+vu7_pcb_width = 172.90;
+vu7_pcb_height = 124.27;
+vu7_width = vu7_pcb_width + vu7_case_x_offset;
+vu7_height = vu7_pcb_height + 9.75;
+vu_rotation = [15,0,0];
+
+        difference() {
+        union() {
+            if(side == "right") {
+                translate([width-wallthick-gap,-(2*wallthick)-gap,0]) 
+                    cube([sidethick,depth+2*wallthick,cheight]);
+                // right tabs for vu5 attachment
+                if(vu_model == "vu5") {
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick,depth-39,
+                        case_z+80]) rotate([75,180,0]) 
+                            slab_r([((width-vesa)/2)+4.5,10,sidethick], [.01,.01,3,3]);
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick,depth-26,
+                        case_z+31.5]) rotate([75,180,0]) 
+                            slab_r([((width-vesa)/2)+4.5,10,sidethick], [.01,.01,3,3]);
+                
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick-1.5,depth-40.85-adj,
+                        case_z+79.5]) rotate([75,180,0]) 
+                    difference() { 
+                        cube([sidethick,10,sidethick]);
+                        translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                            cube([2*sidethick,10+(2*adj),sidethick]);
+                    }
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick-1.5,depth-27.85-adj,
+                        case_z+31]) rotate([75,180,0])
+                    difference() { 
+                        cube([sidethick,10,sidethick]);
+                        translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                            cube([2*sidethick,10+(2*adj),sidethick]);
+                    }
+                }
+                // right tabs for vu7 attachment
+                if(vu_model == "vu7") {
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick-1,depth-49.40,
+                        case_z+vu7_height-15]) rotate([75,180,0]) 
+                            slab_r([((width-vesa)/2)+12,10,sidethick], [.01,.01,3,3]);
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick-1,depth-23.60,
+                        case_z+22.5]) rotate([75,180,0]) 
+                            slab_r([((width-vesa)/2)+12,10,sidethick], [.01,.01,3,3]);
+                    
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick-1.5,depth-51.25,
+                        case_z+vu7_height-15.5]) rotate([75,180,0]) 
+                            difference() { 
+                                cube([sidethick,10,sidethick]);
+                                translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                                    cube([2*sidethick,10+(2*adj),sidethick]);
+                            }
+                    translate([(width/2)+((width-vesa)/2)+(vesa/2)-sidethick-1.5,depth-25.5,
+                        case_z+21.8]) rotate([75,180,0])
+                            difference() { 
+                                cube([sidethick,10,sidethick]);
+                                translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                                    cube([2*sidethick,10+(2*adj),sidethick]);
+                            }
+                }
+                // top rail
+                    translate([width-6.9-adj,-gap,case_z-floorthick-.5])
+                    cube([4,depth-2*(wallthick+gap),2]);
+            }
+            if(side == "left") {
+                translate([-wallthick-gap-sidethick,-(2*wallthick)-gap,0]) 
+                    cube([sidethick,depth+2*wallthick,cheight]);
+                // left tabs for vu5 attachment
+                if(vu_model == "vu5") {
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-3.5-adj,depth-36.4,
+                        case_z+70]) rotate([105,0,0]) 
+                            slab_r([((width-vesa)/2)+4,10, sidethick], [.01,.01,3,3]);
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-3.5-adj,depth-23.5,
+                        case_z+22]) rotate([105,0,0]) 
+                            slab_r([((width-vesa)/2)+4,10,sidethick], [.01,.01,3,3]);
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-3.5-adj,depth-38.35+adj,
+                        case_z+69.5]) rotate([105,0,0])
+                            difference() { 
+                                cube([sidethick,10,sidethick]);
+                                translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                                    cube([2*sidethick,10+(2*adj),2*sidethick]);
+                            }                
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-3.5-adj,depth-25.4+adj,
+                        case_z+21.5]) rotate([105,0,0])  
+                        difference() { 
+                            cube([sidethick,10,sidethick]);
+                            translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                                cube([2*sidethick,10+(2*adj),2*sidethick]);
+                        }
+                }           
+                // left tabs for vu7 attachment
+                if(vu_model == "vu7") {
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-4.25-adj,depth-46.85,
+                        case_z+vu7_height-24.5]) rotate([105,0,0]) 
+                            slab_r([((width-vesa)/2),10, sidethick], [.01,.01,3,3]);
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-4.25-adj,depth-21,
+                        case_z+13]) rotate([105,0,0]) 
+                            slab_r([((width-vesa)/2),10,sidethick], [.01,.01,3,3]);
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-3.5-adj,depth-48.75+adj,
+                        case_z+vu7_height-25]) rotate([105,0,0])
+                            difference() { 
+                                cube([sidethick,10,sidethick]);
+                                translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                                    cube([2*sidethick,10+(2*adj),2*sidethick]);
+                            }                
+                    translate([-((width-vesa)/2)+(width/2)-(vesa/2)-3.5-adj,depth-22.65+adj,
+                        case_z+12.5]) rotate([105,0,0])  
+                        difference() { 
+                            cube([sidethick,10,sidethick]);
+                            translate([0,-adj,sidethick]) rotate([0,45,0]) 
+                                cube([2*sidethick,10+(2*adj),2*sidethick]);
+                        }
+                }
+                // top rail
+                translate([-wallthick-gap-adj,-gap,case_z-floorthick-.5]) 
+                        cube([4,depth-2*(wallthick+gap),2]);
+            }
+        }
+
+        if(side == "right") {
+            // vu5 shape and back cut
+            if(vu_model == "vu5") {
+                translate([width+adj,-.6,case_z+sidethick+2.5]) 
+                    rotate([0,-90,0]) 
+                    linear_extrude(height = 3*sidethick) 
+                        polygon(points = [ [-sidethick,-sidethick-wallthick-5],
+                            [cheight-bottom_height-top_height-3,-sidethick-wallthick-5], 
+                            [cheight-bottom_height-top_height-3,depth-53], 
+                            [-sidethick,depth-33]]);
+                
+                translate([width-(sidethick/2),depth-8,case_z+(121/2)]) 
+                    rotate([vu_rotation[0],0,0]) 
+                        cube_fillet_inside([10,50,110],vertical=[v_fillet,v_fillet,v_fillet,v_fillet],
+                            top=[0,0,0,0],bottom=[3,3,3,3], $fn=90);
+                // tab holes
+                translate([width/2+(vesa/2)-3,depth-37,
+                    case_z+75]) rotate([75,180,0]) cylinder(d=3, h=sidethick+1);
+                translate([width/2+(vesa/2)-3,depth-24,
+                    case_z+26.75]) rotate([75,180,0]) cylinder(d=3, h=sidethick+1);
+            }
+            // vu7 shape and back cut
+            if(vu_model == "vu7") {
+                translate([width+adj,-.6,case_z+sidethick+2.5]) 
+                    rotate([0,-90,0]) 
+                    linear_extrude(height = 2*sidethick) 
+                        polygon(points = [ [-sidethick,-sidethick-wallthick-5],
+                            [cheight-bottom_height-top_height-3,-sidethick-wallthick-5], 
+                            [cheight-bottom_height-top_height-3,depth-63], 
+                            [-sidethick,depth-33]]);
+                
+                translate([width-(sidethick/2),depth-10.5,case_z+70.5]) 
+                    rotate([vu_rotation[0],0,0]) 
+                        cube_fillet_inside([10,50,130],vertical=[v_fillet,v_fillet,v_fillet,v_fillet],
+                            top=[0,0,0,0],bottom=[3,3,3,3], $fn=90);
+                // tab holes
+                translate([width/2+(vesa/2)-10,depth-47,case_z+vu7_height-19.75]) 
+                    rotate([75,180,0]) cylinder(d=3, h=sidethick+4);
+                translate([width/2+(vesa/2)-10,depth-21.25,case_z+18]) 
+                    rotate([75,180,0]) cylinder(d=3, h=sidethick+4);
+            }
+            // bottom attachment holes                         
+            translate([width-wallthick-gap-adj-5,wallthick+gap+10,
+                ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) cylinder(d=3, h=sidethick+(2*adj)+10);
+            translate([width-wallthick-gap-adj-5,depth-wallthick-gap-10,
+                ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) cylinder(d=3, h=sidethick+(2*adj)+10);
+        }
+
+        if(side == "left") {
+            // vu5 shape and back cut
+            if(vu_model == "vu5") {
+                translate([-sidethick+adj,-.6,case_z+sidethick+2.5]) 
+                    rotate([0,-90,0]) 
+                        linear_extrude(height = 3*sidethick) 
+                            polygon(points = [ [-sidethick,-sidethick-wallthick-5],
+                                [cheight-bottom_height-top_height-3,-sidethick-wallthick-5], 
+                                [cheight-bottom_height-top_height-3,depth-53], 
+                                [-sidethick,depth-33]]);
+                
+                translate([-wallthick-gap-(sidethick/2),depth-8,case_z+(121/2)]) 
+                    rotate([vu_rotation[0],0,0]) 
+                        cube_fillet_inside([10,50,110],vertical=[v_fillet,v_fillet,v_fillet,v_fillet],
+                            top=[0,0,0,0],bottom=[3,3,3,3], $fn=90);
+                // tab holes
+                translate([width/2-(vesa/2)-3,depth-36.75,case_z+75]) 
+                    rotate([105,0,0]) cylinder(d=3, h=sidethick+1);
+                translate([width/2-(vesa/2)-3,depth-24.25,case_z+26.75]) 
+                    rotate([75,0,0])  cylinder(d=3, h=sidethick+1);
+            }
+            // vu7 shape and back cut
+            if(vu_model == "vu7") {
+                translate([-sidethick+adj,-.6,case_z+sidethick+2.5]) 
+                    rotate([0,-90,0]) 
+                        linear_extrude(height = 2*sidethick) 
+                            polygon(points = [ [-sidethick,-sidethick-wallthick-5],
+                                [cheight-bottom_height-top_height-3,-sidethick-wallthick-5], 
+                                [cheight-bottom_height-top_height-3,depth-63], 
+                                [-sidethick,depth-33]]);
+                
+                translate([-wallthick-gap-(sidethick/2),depth-10.5,case_z+70.5]) 
+                    rotate([vu_rotation[0],0,0]) 
+                        cube_fillet_inside([10,50,130],vertical=[v_fillet,v_fillet,v_fillet,v_fillet],
+                            top=[0,0,0,0],bottom=[3,3,3,3], $fn=90);
+                // tab holes
+                translate([width/2-(vesa/2)-10,depth-48,case_z+vu7_height-19.75]) 
+                    rotate([105,0,0]) cylinder(d=3, h=sidethick+4);
+                translate([width/2-(vesa/2)-10,depth-22.25,case_z+18]) 
+                    rotate([105,0,0])  cylinder(d=3, h=sidethick+4);
+            }
+            // bottom attachment holes
+            translate([-sidethick-adj-6,wallthick+gap+10,((bottom_height+floorthick)/2)-1]) 
+                rotate([0,90,0]) cylinder(d=3, h=sidethick+(2*adj)+10);
+            if(depth >= 75) {
+                translate([-sidethick-adj-6,depth-wallthick-gap-10,
+                    ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) cylinder(d=3, h=sidethick+(2*adj)+10);
+            }
+            else {
+                translate([-sidethick-adj-6,wallthick+gap+40.5,((bottom_height+floorthick)/2)-1])
+                    rotate([0,90,0]) cylinder(d=3, h=sidethick+(2*adj)+10);                        
+            }
+        }
+    }
+}

lib/keyhole.scad

@@ -0,0 +1,84 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+*/
+
+
+/*
+           NAME: keyhole
+    DESCRIPTION: enclosed keyhole
+           TODO: none
+
+          USAGE: keyhole(keysize, mask)
+
+                         keysize[0] = size_x
+                         keysize[1] = size_y
+                         keysize[2] = size_z
+                            mask[0] = true enables component mask
+                            mask[1] = mask length
+                            mask[2] = mask setback
+                            mask[3] = mstyle "default"
+*/
+
+module keyhole(keysize, mask) {
+
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+    adj=.01;
+    $fn = 90;
+
+    if(enablemask == true && mstyle == "default") {
+        union() {
+            translate([0, 0, -adj]) cylinder(h=keysize[3]+2*adj, d=keysize[0]);
+            translate([-keysize[1]/2, 0, -adj]) cube([keysize[1], keysize[2]+keysize[0]/2, keysize[3]+2*adj]);
+            translate([0, -keysize[1]/2, -adj]) cube([keysize[2]+keysize[0]/2, keysize[1], keysize[3]+2*adj]);
+        }
+    }
+    else {
+        difference() {
+            union() {
+                translate([0, 0, -adj]) 
+                difference() {
+                    difference() {
+                        translate([-keysize[2], -keysize[2], keysize[3]]) cube([keysize[2]*3, keysize[2]*3, 4.5]);
+                        translate([0, -10, 0]) rotate([0, 0, 135]) cube([20, 10, 10]);
+                        translate([keysize[2], keysize[2], -adj]) cube([keysize[2]*3, keysize[2]*3, keysize[3]+5]);
+                    }
+                    difference() {
+                        translate([-keysize[2]+2, -keysize[2]+2, keysize[3]-adj]) 
+                            cube([-4+keysize[2]*3, -4+keysize[2]*3, 3.5]);
+                        translate([2, -10, 0]) rotate([0, 0, 135]) cube([20, 10, 10]);
+                        translate([+keysize[2]-2, keysize[2]-2, -adj]) 
+                            cube([keysize[2]*3, keysize[2]*3, keysize[3]+5]);
+                    }
+                }
+                difference() {
+                    translate([-keysize[2], -keysize[2], 0]) cube([keysize[2]*3, keysize[2]*3, keysize[3]]);
+                    translate([0, -10, -adj]) rotate([0, 0, 135]) cube([20, 10, 10]);
+                }
+            }
+            translate([keysize[2], keysize[2], -adj]) cube([keysize[2]*3, keysize[2]*3, keysize[3]+2*adj]);
+            union() {
+                translate([0, 0, -adj]) cylinder(h=keysize[3]+2*adj, d=keysize[0]);
+                translate([-keysize[1]/2, 0, -adj]) cube([keysize[1], keysize[2]+keysize[0]/2, keysize[3]+2*adj]);
+                translate([0, -keysize[1]/2, -adj]) cube([keysize[2]+keysize[0]/2, keysize[1], keysize[3]+2*adj]);
+            }
+        }
+    }
+}

lib/oem_adafruit.scad

@@ -0,0 +1,86 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    adafruit_lcd(mask)
+
+*/
+
+
+/*
+           NAME: adafruit_lcd
+    DESCRIPTION: adafruit 4311 2in TFT IPS Display model
+           TODO: none
+
+          USAGE: adafruit_lcd(mask[])
+
+                              mask[0] = true enables mask
+                              mask[1] = mask length
+                              mask[2] = mask setback
+                              mask[3] = mstyle "default"
+
+*/
+
+module adafruit_lcd(mask) {
+
+    size_x = 35.5;
+    size_y = 59;
+    size_z = 1.6;
+    size_xm = size_x+1;
+    size_ym = size_y+1;
+    lcd_size = [34.75,48,2];
+    corner_radius = 2;
+    hole_size = 2.5;
+    enablemask = mask[0];
+    mlen = mask[1];
+    back = mask[2];
+    mstyle = mask[3];
+
+    adj = .01;
+    $fn = 90;
+
+    if(enablemask == true && mstyle == "default") {
+        translate([2.25, 11, size_z+2.5-back]) cube([lcd_size[0]-4, lcd_size[1]-7, mlen]);
+        storage("microsdcard", 11, 44, 0, "bottom", 180, [size_x, size_z, size_y], [0], size_z, enablemask, [true, 20, 0, "default"]);
+        fpc("fh19", .5, 22, 0, "bottom", 270, [18,0,0], ["smt","side","white","black"], size_z, enablemask, [true,10,2,"default"]);
+    }
+    if(enablemask == false) {
+        difference() {
+            union() {
+                color("#252525") slab([size_x, size_y, size_z], corner_radius);
+                color("black",1) translate([0.375, 5.75, size_z-adj]) cube([lcd_size[0], lcd_size[1], 2.5]);
+                color("#353535",1) translate([.375, 9.25, size_z+2.5-adj]) cube([lcd_size[0], lcd_size[1]-4, .1]);
+                color("dimgrey",1) translate([2.25, 11, size_z+2.5-adj]) cube([lcd_size[0]-4, lcd_size[1]-7, .2]);
+            }
+            color("#252525") translate([hole_size, size_y-hole_size, -adj]) cylinder(d=hole_size,h=6);
+            color("#252525") translate([size_x-hole_size, size_y-hole_size, -adj]) cylinder(d=hole_size, h=4);
+            for(i=[5:2.54:31]) {
+                color("#fee5a6",1) translate([i, 2.5, -adj]) cylinder(d=.8, h=6);
+            }
+        }
+        storage("microsdcard", 11, 44, 0, "bottom", 180, [size_x, size_z, size_y], [0], size_z, enablemask, [true, 20, 0, "default"]);
+        ic("generic", 13.25, 9, 0, "bottom", 0, [4, 10, 1.75], ["dimgrey"], size_z, enablemask, [false, 20, 0, "default"]);
+        fpc("fh19", .5, 22, 0, "bottom", 270, [18,0,0], ["smt","side","white","black"], size_z, enablemask, [true,10,2,"default"]);
+
+        for(i=[5:2.54:31]) {
+            pcbpad("round", i, 2.5, 0, "top", 0, [1, 1, 0], [.8, "#fee5a6", 1.2], size_z, enablemask, [false, 20, 0, "default"]);
+        }
+        pcbpad("round", hole_size, size_y-hole_size, 0, "top", 0, [1, 1, 0], 
+                [hole_size, "#fee5a6", hole_size+1], size_z, enablemask, [false, 20, 0, "default"]);
+        pcbpad("round", size_x-hole_size, size_y-hole_size, 0, "top", 0, [1, 1, 0], 
+                [hole_size, "#fee5a6", hole_size+1], size_z, enablemask, [false, 20, 0, "default"]);
+    }
+}

lib/standoff.scad

@@ -0,0 +1,190 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+*/
+
+
+/*
+           NAME: standoff
+    DESCRIPTION: create standoffs
+           TODO: none
+
+          USAGE: standoff(stand_off, mask)
+
+                 stand_off[size, diameter, height, holesize, supportsize, supportheight, sink, pillarstyle, 
+                            pillarsupport, reverse, insert_e, i_dia, i_depth], mask)
+
+                           size = "m2_tap","m2","m2+","m2.5_tap","m2.5","m2.5+","m3_tap","m3","m3+","m4_tap","m4","m4+","custom" 
+                           diameter = pillar diameter
+                           height = total height
+                           holesize = hole diameter
+                           supportsize = support size for sink
+                           supportheight = height of support for sink
+                           sink = none, countersunk, recessed, nut holder, blind
+                           pillarstyle = hex, round
+                           pillarsupport = none, left, rear, front, right
+                           reverse = true or false
+                           insert_e = true or false
+                           i_dia = insert diameter
+                           i_depth = insert hole depth
+
+                           mask[0] = enablemask
+                           mask[1] = mlength
+                           mask[2] = msetback
+                           mask[3] = mstyle
+
+*/
+
+module standoff(stand_off, mask){
+
+    size = stand_off[0];
+    diameter = size == "m2_tap" || size == "m2" || size == "m2+" ? 4 : 
+                size == "m2.5_tap" || size == "m2.5" || size == "m2.5+" ? 4 : 
+                    size == "m3_tap" || size == "m3" || size == "m3+" ? 5 : 
+                        size == "m4_tap" || size == "m4" || size == "m4+" ? 6 : stand_off[1];
+    height = stand_off[2];
+    holesize = size == "m2_tap" ? 1.6 : size == "m2" ? 2 : size == "m2+" ? 2.26 : 
+                    size == "m2.5_tap" ? 2.05 : size == "m2.5" ? 2.5 : size == "m2.5+" ? 2.83 : 
+                        size == "m3_tap" ? 2.5 : size == "m3" ? 3 : size == "m3+" ? 3.4 : 
+                            size == "m4_tap" ? 3.3 : size == "m4" ? 4 : size == "m4+" ? 4.4 : stand_off[3];
+    supportsize = stand_off[4];
+    supportheight = stand_off[5];
+    sink = stand_off[6];
+    pillarstyle = stand_off[7];
+    pillarsupport = stand_off[8];
+    reverse = stand_off[9];
+    insert_e = stand_off[10];
+    i_dia = stand_off[11];
+    i_depth = stand_off[12];
+    enablemask = mask[0];
+    mlength = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    ps = size == "m2_tap" || size == "m2" || size == "m2+" ? 4 : 
+            size == "m2.5_tap" || size == "m2.5" || size == "m2.5+" ? 5 : 
+                size == "m3_tap" || size == "m3" || size == "m3+" ? 6.72 : 
+                    size == "m4_tap" || size == "m4" || size == "m4+" ? 8.96 : (2*holesize)+.5;
+    ds = size == "m2_tap" || size == "m2" || size == "m2+" ? 1.2 : 
+            size == "m2.5_tap" || size == "m2.5" || size == "m2.5+" ? 1.5 : 
+                size == "m3_tap" || size == "m3" || size == "m3+" ? 1.86 : 
+                    size == "m4_tap" || size == "m4" || size == "m4+" ? 2.48 : holesize*.465;
+
+    adj = 0.1;
+    $fn = 90;
+
+    if(enablemask == true && mstyle == "default") {
+        if(reverse == true) {
+            translate([0,0,-msetback-adj]) cylinder(d=supportsize-2*adj,h=mlength);
+        }
+        else {
+            translate([0,0,-mlength+msetback+adj]) cylinder(d=supportsize-2*adj,h=mlength);
+        }
+    }
+    if(enablemask == false) {
+        difference (){ 
+            union () { 
+                if(pillarstyle == "hex" && reverse == false) {
+                    rotate([0,0,30]) cylinder(d=diameter*2/sqrt(3), h=height, $fn=6);
+                }
+                if(pillarstyle == "hex" && reverse == true) {
+                    translate([0,0,-height]) rotate([0,0,30]) cylinder(d=diameter*2/sqrt(3), h=height, $fn=6);
+                }
+                if(pillarstyle == "round" && reverse == false) {
+                    cylinder(d=diameter, h=height);
+                }
+                if(pillarstyle == "round" && reverse == true) {
+                    translate([0,0,-height]) cylinder(d=diameter, h=height);
+                }
+                if(reverse == true) {
+                    translate([0,0,-supportheight]) cylinder(d=supportsize, h=supportheight);
+                }
+                else {
+                    cylinder(d=(supportsize),h=supportheight);
+                }
+                if(pillarsupport == "rear" && reverse == true) {
+                    translate([-1,-supportsize/2,-height]) cube([2, supportsize/2, height]);
+                }
+                if(pillarsupport == "rear" && reverse == false) {
+                    translate([-1,-supportsize/2,0]) cube([2, supportsize/2, height]);
+                }
+                if(pillarsupport == "front" && reverse == true) {
+                    translate([-1,0,-height]) cube([2, supportsize/2, height]);
+                }
+                if(pillarsupport == "front" && reverse == false) {
+                    translate([-1,0,0]) cube([2, supportsize/2, height]);
+                }
+                if(pillarsupport == "left" && reverse == true) {
+                    translate([-supportsize/2,-1,-height]) cube([supportsize/2, 2, height]);
+                }
+                if(pillarsupport == "left" && reverse == false) {
+                    translate([-supportsize/2,-1,0]) cube([supportsize/2, 2, height]);
+                }
+                if(pillarsupport == "right" && reverse == true) {
+                    translate([0,-1,-height]) cube([supportsize/2, 2, height]);
+                }
+                if(pillarsupport == "right" && reverse == false) {
+                    translate([0,-1,0]) cube([supportsize/2, 2, height]);
+                }
+            }
+            // hole
+            if(sink == "none" && reverse == false) {
+                translate([0,0,-adj]) cylinder(d=holesize, h=height+(adj*2));
+            }
+            if(sink != "blind"  && reverse == false) {
+                translate([0,0,-adj]) cylinder(d=holesize, h=height+(adj*2));
+            }
+            if(sink != "blind"  && reverse == true) {
+                translate([0,0,-adj-height]) cylinder(d=holesize, h=height+(adj*2));
+            }
+            // countersink hole
+            if(sink == "countersunk" && reverse == false) {
+                translate([0,0,-adj]) cylinder(d1=ps, d2=holesize, h=ds);
+            }
+            if(sink == "countersunk" && reverse == true) {
+                translate([0,0,+adj-ds]) cylinder(d1=holesize, d2=ps, h=ds);
+            }
+            // recessed hole
+            if(sink == "recessed" && reverse == false) {
+                translate([0,0,-adj]) cylinder(d=6.5, h=supportheight-2);
+            }
+            if(sink == "recessed" && reverse == true) {
+                translate([0,0,+adj-supportheight+2]) cylinder(d=6.5, h=supportheight-2);
+            }
+            // nut holder
+            if(sink == "nut holder" && reverse == false) {
+                translate([0,0,-adj]) cylinder(d=ps*2/sqrt(3),h=ds,$fn=6);     
+            }
+            if(sink == "nut holder" && reverse == true) {
+                translate([0,0,+adj-ds]) cylinder(d=ps*2/sqrt(3),h=ds,$fn=6);     
+            }
+            // blind hole
+            if(sink == "blind" && reverse == false) {
+                translate([0,0,2]) cylinder(d=holesize, h=height);
+            }
+            if(sink == "blind" && reverse == true) {
+                translate([0,0,-height-2-adj]) cylinder(d=holesize, h=height);
+            }
+            if(insert_e == true && reverse == false) {
+                translate([0,0,height-i_depth]) cylinder(d=i_dia, h=i_depth+adj);
+            }
+            if(insert_e == true && reverse == true) {
+                translate([0,0,-height-adj]) cylinder(d=i_dia, h=i_depth+adj);
+            }
+        }
+    }
+}

lib/vent.scad

@@ -0,0 +1,63 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+    vent_panel_hex(x, y, thick, cell_size, cell_spacing, border, borders);
+
+*/
+
+
+/*
+           NAME: vent_panel_hex
+    DESCRIPTION: creates hex vent panel
+           TODO: none
+
+          USAGE: vent_panel_hex(x, y, thick, cell_size=8, cell_spacing=3, border=3, borders="default")
+
+                                x = #rows
+                                y = #columns
+                            thick = pattern thickness
+                        cell_size = size of hex
+                     cell_spacing = space between hex
+                           border = size of borber
+                          borders = "none", "default"
+
+*/
+
+module vent_panel_hex(x, y, thick, cell_size=8, cell_spacing=3, border=3, borders="default") {
+    hole = 3.2;
+    xb = (borders == "y" || borders == "none") ? cell_spacing : border;
+    yb = (borders == "x" || borders == "none") ? cell_spacing : border;
+    hxb = max(yb/2, cell_spacing + hole);
+    hyb = max(xb/2, cell_spacing + hole);
+
+    cells_x = floor((2*(x-2*xb-cell_size)/(cell_size+cell_spacing))+1);
+    cells_y = floor(((sqrt(12)*(y-2*yb)-4*cell_size)/(3*(cell_size+cell_spacing)))+1);
+    csx = cell_size + (cells_x-1)*(cell_size+cell_spacing)/2;
+    csy = sqrt(4/3)*cell_size + ((cell_size+cell_spacing)*sqrt(3/4)*(cells_y-1));
+
+    difference() {
+        color("grey",1) slab([x,y,thick],2);
+        color("grey",1) translate([(x-csx)/2,(y-csy)/2,-1])
+            vent_hex(cells_x, cells_y, thick+3, cell_size, cell_spacing, "horizontal");
+        if (borders != "none") {
+            color("grey",1) translate([    hxb,     hyb, -1]) cylinder(d=hole, h=thick+3);
+            color("grey",1) translate([x - hxb,     hyb, -1]) cylinder(d=hole, h=thick+3);
+            color("grey",1) translate([    hxb, y - hyb, -1]) cylinder(d=hole, h=thick+3);
+            color("grey",1) translate([x - hxb, y - hyb, -1]) cylinder(d=hole, h=thick+3);
+        }
+    }
+}

mod/add.scad

@@ -0,0 +1,208 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: add
+    DESCRIPTION: places additive objects 
+           TODO: none
+
+          USAGE: add(type, loc_x, loc_y, loc_z, face, rotation, size[], data[], mask[])
+
+                         type = component type
+                        loc_x = x location placement
+                        loc_y = y location placement
+                        loc_z = z location placement
+                         face = "top", "bottom", "left", "right", "front", "rear"
+                   rotation[] = object rotation
+                 parametric[] = parametric movement array
+                       size[] = size array x,y,z
+                       data[] = data variable on type
+                      mask[0] = true enables component mask
+                      mask[1] = mask length
+                      mask[2] = mask setback
+                      mask[3] = mstyle "default"
+
+*/
+
+module add(type, loc_x, loc_y, loc_z, face, rotation, size, data, mask) {
+
+    size_x = size[0];
+    size_y = size[1];
+    size_z = size[2];
+    enablemask = mask[0];
+    mlen = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    if(type == "access_cover") {
+        if(rotation[2] == 180) {
+            color("grey",1) translate([loc_x+size_x,loc_y+size_y,loc_z])  rotate(rotation) access_cover([size_x,size_y,size_z],data[0]);
+        }
+        else {
+            color("grey",1) translate([loc_x,loc_y,loc_z]) rotate(rotation) access_cover([size_x,size_y,size_z],data[0]);
+        }
+    }
+    if(type == "access_panel") {
+        if(rotation[2] == 180) {
+            translate([loc_x+size_x,loc_y+size_y,loc_z])  rotate(rotation) access_panel([size_x,size_y,size_z],data[0],mask);
+        }
+        else {
+            translate([loc_x,loc_y,loc_z])  rotate(rotation) access_panel([size_x,size_y,size_z],data[0],mask);
+        }
+    }
+    if(type == "art") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) art(data[0],data[1],data[2]); 
+    }
+    if(type == "batt_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) batt_holder(data[0]);
+    }
+    if(type == "button") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) buttons(data[0],[size_x,size_y,size_z],data[1],data[2],mask); 
+    }
+    if(type == "button_assembly") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) button_assembly(data[0],size_x,size_z); 
+    }
+    if(type == "fan_cover") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) fan_cover(size_x, size_z, data[0]);
+    }
+    if(type == "feet") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) feet(size_x, size_z);
+    }
+    if(type == "hd_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hd_mount(data[0],data[1],data[2],data[3]); 
+    }
+    if(type == "hk_boom_grill") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_boom_grill(data[0],size_z); 
+    }
+    if(type == "hk_boom_speaker_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_boom_speaker_holder(data[0],data[1]); 
+    }
+    if(type == "hk_boom_vring") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) hk_boom_vring(data[0]);
+    }
+    if(type == "hk_h3_port_extender_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_h3_port_extender_holder(data[1],data[0]); 
+    }
+    if(type == "hk_hc4_oled_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_hc4_oled_holder(face, size_z, mask); 
+    }
+    if(type == "hk_uart_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_uart_holder(mask);
+    }
+    if(type == "hk_uart_strap") {
+        color("grey",1) translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_uart_strap();
+    }
+    if(type == "keyhole") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) keyhole(data[0],mask); 
+    }
+    if(type == "nut_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) nut_holder(data[0], data[1], size_x, size_y, size_z, mask); 
+    }
+    if(type == "pcb_holder") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) pcb_holder([size_x,size_y,size_z],data[0]);
+    }
+    if(type == "rectangle") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) slab_r([size_x,size_y,size_z],data[0]);
+    }
+    if(type == "round") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) cylinder(d=size_x,h=size_z);
+    }
+    if(type == "slot") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) slot(size_x,size_y,size_z);
+    }
+    if(type == "sphere") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) sphere(d=size_x);
+    }
+    if(type == "standoff") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) standoff(data[0], mask);
+    }
+    if(type == "text") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) linear_extrude(height = size_z) text(data[1], size=data[0]);
+    }    
+    if(type == "vent_panel_hex") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) vent_panel_hex(size_x, size_y, thick=size_z, 
+            cell_size=data[0], cell_spacing=data[1], border=data[3], borders=data[2]);
+    }
+
+    // models
+    if(type == "adafruit_lcd") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) adafruit_lcd(mask); 
+    }
+    if(type == "dsub") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) dsub(data[0], data[1], mask); 
+    }
+    if(type == "fan") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) fans(data[0],mask); 
+    }
+    if(type == "hd25") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hd25(data[0],data[1],mask); 
+    }
+    if(type == "hd35") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hd35(data[0],mask); 
+    }
+    if(type == "hk_boom") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_boom(data[0],data[1],mask); 
+    }
+    if(type == "hk_boom_speaker") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_boom_speaker(mask); 
+    }
+    if(type == "hk_boom_speaker_pcb") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_boom_speaker_pcb(data[1],true,data[0],mask); 
+    }
+    if(type == "hk_h3_port_extender") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_h3_port_extender(data[0],mask); 
+    }
+    if(type == "hk_hc4_oled") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_hc4_oled(mask); 
+    }
+    if(type == "hk_lcd35") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_35lcd(mask); 
+    }
+    if(type == "hk_m1s_ups") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_m1s_ups(mask); 
+    }
+    if(type == "hk_netcard") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_netcard(mask); 
+    }
+    if(type == "hk_pwr_button") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_pwr_button(mask); 
+    }
+    if(type == "hk_speaker") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_speaker(mask); 
+    }
+    if(type == "hk_uart") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_uart(mask); 
+    }
+    if(type == "hk_vu7c") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_vu7c(data[0],data[1],mask); 
+    }
+    if(type == "hk_vu8m") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_vu8m(data[0],mask); 
+    }
+    if(type == "hk_vu8s") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_vu8s(mask); 
+    }
+    if(type == "hk_wb2") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_wb2(); 
+    }
+    if(type == "hk_xu4_shifter_shield") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) hk_xu4_shifter_shield(mask); 
+    }
+    if(type == "stl_model") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) stl_model(data[0],data[1]); 
+    }
+}

mod/case_adapter.scad

@@ -0,0 +1,428 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: case_adapter
+    DESCRIPTION: creates adapters for legacy cases footprints
+           TODO: nano-itx hole locations
+
+          USAGE: case_adapter(case_design)
+
+*/
+
+module case_adapter(case_design) {
+
+mb_adapters=[
+            ["adapter_ssi-eeb", 304.8, 330.2, ["left_rear", 6.35, 33.02], ["middle_rear", 163.83, 10.16], ["right_rear", 288.29, 10.16], 
+                                           ["left_middle", 6.35, 165.1], ["middle_middle", 163.83, 165.1], ["right_middle", 288.29, 165.1],
+                                           ["middle_middle2", 209.55, 237.49], ["right_middle2", 288.29, 237.49],
+                                           ["left_front", 6.35, 322.58], ["middle_front", 163.83, 322.58], ["right_front", 299.72, 322.58]],
+            ["adapter_ssi-ceb", 304.8, 266.7, ["left_rear", 6.35, 33.02], ["middle_rear", 163.83, 10.16], ["right_rear", 288.29, 10.16], 
+                                           ["left_middle", 6.35, 165.1], ["middle_middle", 163.83, 165.1], ["right_middle", 288.29, 165.1],
+                                           ["middle_front", 209.55, 237.49], ["right_front", 288.29, 237.49]],
+            ["adapter_atx", 304.8, 243.84, ["left_rear", 6.35, 33.02], ["middle_rear", 163.83, 10.16], 
+                                           ["middle2_rear", 211.99, 10.16], ["right_rear", 288.29, 10.16], 
+                                           ["left_middle", 6.35, 165.1], ["middle_middle", 163.83, 165.1], ["right_middle", 288.29, 165.1],
+                                           ["left_front", 6.35, 237.49], ["middle_front", 163.83, 237.49], ["right_front", 288.29, 237.49]],
+            ["adapter_micro-atx", 243.84, 243.84, ["left_rear", 6.35, 33.02], ["middle_rear", 163.83, 10.16], ["right_rear", 211.99, 10.16], 
+                                                  ["left_middle", 6.35, 165.1], ["middle_middle", 163.83, 165.1], 
+                                                  ["middle2_middle", 209.55, 165.1], ["right_middle", 229.87, 165.1],
+                                                  ["left_front", 6.35, 237.49], ["right_front", 163.83, 237.49]], 
+            ["adapter_dtx", 230.2, 243.84, ["left_rear", 6.35, 33.02], ["middle_rear", 163.83, 10.16], ["right_rear", 211.99, 10.16], 
+                                           ["left_middle", 6.35, 165.1], ["middle_middle", 163.83, 165.1], ["right_middle", 209.55, 165.1],
+                                           ["left_front", 6.35, 237.49], ["right_front", 163.83, 237.49]], 
+            ["adapter_flex-atx", 228.6, 190.5, ["left_rear", 6.35, 33.02], ["middle_rear", 163.83, 10.16], ["right_rear", 211.99, 10.16], 
+                                               ["left_front", 6.35, 165.1], ["middle_front", 163.83, 165.1], 
+                                               ["right_front", 209.55, 165.1]],
+            ["adapter_mini-dtx", 203.2, 170.18, ["left_rear", 6.35, 33.02], ["right_rear", 163.83, 10.16], 
+                                                ["left_front", 6.35, 165.1], ["right_front", 163.83, 165.1]], 
+            ["adapter_mini-itx", 170, 170, ["left_rear", 6.35, 33.02], ["right_rear", 163.83, 10.16], 
+                                           ["left_front", 6.35, 165.1], ["right_front", 163.83, 165.1]],
+            ["adapter_mini-itx_thin", 170, 170, ["left_rear", 6.35, 33.02], ["right_rear", 163.83, 10.16], 
+                                           ["left_front", 6.35, 165.1], ["right_front", 163.83, 165.1]],
+            ["adapter_mini-stx", 140, 147, ["left_rear", 5, 5], ["right_rear", 135, 5],
+                                           ["left_front", 5, 142], ["right_front", 135, 142]],
+            ["adapter_mini-stx_thin", 140, 147, ["left_rear", 5, 5], ["right_rear", 135, 5],
+                                           ["left_front", 5, 142], ["right_front", 135, 142]],
+                                           ];
+
+    mb = search([case_design],mb_adapters);
+    mba_x = mb_adapters[mb[0]][1];
+    mba_y = mb_adapters[mb[0]][2];
+    mba_z = floorthick;
+    mba_offset_x = -8.35;
+    mba_offset_y = 0;
+    mba_radius = 5;
+    mba_standoff = [6.75, floorthick, 4, 7, floorthick, "none", "round", "none", true, false, 0, 0];
+    io_offset = 6.35;
+    adj = .01;
+
+    difference() {
+        union() {
+            difference() {
+                union() {
+                    translate([mba_offset_x,mba_offset_y,0]) slab([mba_x,mba_y,mba_z], mba_radius);
+                    // additive accessories
+                    if(accessory_name != "none") {
+                        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                            class = accessory_data[a[0]][i];
+                            type = accessory_data[a[0]][i+1];
+                            loc_x = accessory_data[a[0]][i+2];
+                            loc_y = accessory_data[a[0]][i+3];
+                            loc_z = accessory_data[a[0]][i+4];
+                            face = accessory_data[a[0]][i+5];
+                            rotation = accessory_data[a[0]][i+6];
+                            parametric = accessory_data[a[0]][i+7];
+                            size = accessory_data[a[0]][i+8];
+                            data = accessory_data[a[0]][i+9];
+                            mask = accessory_data[a[0]][i+10];
+
+                            if(class == "add1" && face == "bottom") {
+                                parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, [false,mask[1],mask[2],mask[3]]);
+                            }
+                        }
+                    }
+                }
+                // adapter holes
+                for (i=[2:len(mb_adapters[mb[0]])-3:len(mb_adapters[mb[0]])-3]) {
+                    for (c=[1:1:len(mb_adapters[mb[0]])-3]) {
+                        mbhole_pos = mb_adapters[mb[0]][i+c][0];
+                        mbhole_x = mb_adapters[mb[0]][i+c][1]+mba_offset_x;
+                        mbhole_y = mb_adapters[mb[0]][i+c][2]+mba_offset_y;
+                        mbhole_z = -floorthick;
+                        translate([mbhole_x,mbhole_y,-1]) cylinder(d=4, h=mba_z+2);
+                    }
+                }
+
+                // pcb standoff holes
+                if(sbc_bottom_standoffs == true) {
+                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                        class = sbc_data[s[0]][i+1];
+                        type = sbc_data[s[0]][i+2];
+                        id = sbc_data[s[0]][i+3];
+                        pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                        pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                        pcbhole_z = sbc_data[s[0]][i+6];
+                        pcbhole_size = sbc_data[s[0]][i+9][0];
+                        pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_rear" && 
+                            bottom_rear_left_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_front" && 
+                            bottom_front_left_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_rear" && 
+                            bottom_rear_right_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_front" && 
+                            bottom_front_right_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+                    }
+                }
+                // bottom cover pattern
+                if(bottom_cover_pattern != "solid") {
+                    if(bottom_cover_pattern == "hex_5mm") {
+                        translate([1,0,-2]) vent_hex(mba_x/3.75,mba_y/6,floorthick+4,5,1.5,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "hex_8mm") {
+                        translate([1,2,-2]) vent_hex(mba_x/5.5,mba_y/9.5,floorthick+4,8,1.5,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "linear_vertical") {
+                        translate([0,-gap,-2]) vent(wallthick,mba_y-2*wallthick-gap,floorthick+4,1,1,(mba_x-2*wallthick-gap)/4,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "linear_horizontal") {
+                        translate([-gap,-gap,-2]) vent(mba_x-2*wallthick-gap,wallthick,floorthick+4,1,(mba_y-2*wallthick-gap)/3,1,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "astroid") {
+                        for(c=[3:12:mba_y-8]) {
+                            for(r=[4:12:mba_x-8]) {
+                                translate([r,c,-4]) linear_extrude(floorthick+5) import("./dxf/astroid_8mm.dxf");
+                            }
+                        }   
+                    }
+                }
+                // subtractive accessories
+                if(accessory_name != "none") {
+                    for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                        class = accessory_data[a[0]][i];
+                        type = accessory_data[a[0]][i+1];
+                        loc_x = accessory_data[a[0]][i+2];
+                        loc_y = accessory_data[a[0]][i+3];
+                        loc_z = accessory_data[a[0]][i+4];
+                        face = accessory_data[a[0]][i+5];
+                        rotation = accessory_data[a[0]][i+6];
+                        parametric = accessory_data[a[0]][i+7];
+                        size_x = accessory_data[a[0]][i+8][0];
+                        size_y = accessory_data[a[0]][i+8][1];
+                        size_z = accessory_data[a[0]][i+8][2];
+                        data = accessory_data[a[0]][i+9];
+                        mask = accessory_data[a[0]][i+10];
+
+                        if ((class == "sub" && face == "bottom") || class == "suball") {
+                            if(accessory_highlight == false) {
+                                parametric_move_sub(type, loc_x, loc_y, loc_z, face, rotation, parametric,
+                                    [size_x,size_y,size_z],data, mask);
+                            }
+                            else {
+                                #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,parametric,
+                                    [size_x,size_y,size_z],data, mask);
+
+                            }
+                        }
+
+                        // create openings for additive 
+                        if ((class == "add1" || class == "add2" || class == "model") && mask[0] == true) {
+                            if(accessory_highlight == false) {
+                                    parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                            }
+                            else {
+                                    #parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                            }
+                        }
+                    }
+                }
+                // ui access panel
+                if(bottom_access_panel_enable == true) {
+                    if(access_panel_rotation == 0) {
+                        translate([access_panel_location[0],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                    if(access_panel_rotation == 90) {
+                        translate([access_panel_location[0]+access_panel_size[1],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                    if(access_panel_rotation == 180) {
+                        translate([access_panel_location[0]+access_panel_size[0],access_panel_location[1]+access_panel_size[1],0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                    if(access_panel_rotation == 270) {
+                        translate([access_panel_location[0],access_panel_location[1]+access_panel_size[0], 0]) rotate([0,0,access_panel_rotation]) 
+                            access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+                    }
+                }
+            }
+            // adapter standoffs
+            for (i=[2:len(mb_adapters[mb[0]])-3:len(mb_adapters[mb[0]])-3]) {
+                for (c=[1:1:len(mb_adapters[mb[0]])-3]) {
+                    mbhole_pos = mb_adapters[mb[0]][i+c][0];
+                    mbhole_x = mb_adapters[mb[0]][i+c][1]+mba_offset_x;
+                    mbhole_y = mb_adapters[mb[0]][i+c][2]+mba_offset_y;
+                    mbhole_z = -floorthick;
+                    translate([mbhole_x,mbhole_y,floorthick]) standoff(mba_standoff,[false,10,2,"default"]);
+                }
+            }
+            // pcb standoffs
+            if(sbc_bottom_standoffs  == true) {
+                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                        class = sbc_data[s[0]][i+1];
+                        type = sbc_data[s[0]][i+2];
+                        id = sbc_data[s[0]][i+3];
+                        pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                        pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                        pcbhole_z = sbc_data[s[0]][i+6];
+                        pcbhole_size = sbc_data[s[0]][i+9][0];
+                        pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                    if(class == "pcbhole" && id == pcb_id && 
+                        (pcbhole_pos == "left_rear" || pcbhole_pos == "left_front" || pcbhole_pos == "right_rear" || pcbhole_pos == "right_front")) {
+                        if (pcbhole_pos == "left_rear" && bottom_rear_left_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_rear_left_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_rear_left_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "left_front" && bottom_front_left_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_front_left_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_front_left_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "right_rear" && bottom_rear_right_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_rear_right_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_rear_right_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "right_front" && bottom_front_right_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_front_right_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_front_right_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                    }
+                }
+            }
+        }
+    translate([mba_offset_x-10, -10, -1]) cube([mba_x+20, 10, floorthick+10]);
+    }
+    // additive accessories
+    if(accessory_name != "none") {
+        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+            class = accessory_data[a[0]][i];
+            type = accessory_data[a[0]][i+1];
+            loc_x = accessory_data[a[0]][i+2];
+            loc_y = accessory_data[a[0]][i+3];
+            loc_z = accessory_data[a[0]][i+4];
+            face = accessory_data[a[0]][i+5];
+            rotation = accessory_data[a[0]][i+6];
+            parametric = accessory_data[a[0]][i+7];
+            size = accessory_data[a[0]][i+8];
+            data = accessory_data[a[0]][i+9];
+            mask = accessory_data[a[0]][i+10];
+
+            if(class == "add2" && face == "bottom") {
+                parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, [false,mask[1],mask[2],mask[3]]);
+            }
+        }
+    }
+    // ui access port
+    if(bottom_access_panel_enable == true) {
+        if(access_panel_rotation == 0) {
+            translate([access_panel_location[0],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 90) {
+            translate([access_panel_location[0]+access_panel_size[1],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 180) {
+            translate([access_panel_location[0]+access_panel_size[0],access_panel_location[1]+access_panel_size[1],0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 270) {
+            translate([access_panel_location[0],access_panel_location[1]+access_panel_size[0], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+    }
+}
+
+
+/*
+           NAME: io_shield
+    DESCRIPTION: creates rear io panel for legacy cases
+           TODO: none
+
+          USAGE: io_shield()
+
+*/
+module io_shield() {
+
+    io_window_x = case_design == "adapter_mini-stx_thin" || case_design == ("adapter_mini-stx") ? 123.95 : 158.75;
+    io_window_y = 4;
+    io_window_z = case_design == "adapter_mini-stx" ? 40 : case_design == "adapter_mini-stx_thin" || case_design == "adapter_mini-itx_thin" ? 25 : 44;
+    io_offset = case_design == "adapter_mini-stx_thin" || case_design == "adapter_mini-stx" ? 1.2 : 10.79;
+
+    difference() {
+        union() {
+            translate([-1,io_window_y-1,-1]) cube([io_window_x+2,1,io_window_z+2]);
+            cube([io_window_x,4,io_window_z]);
+        }
+        translate([2,-2,2]) cube([io_window_x-4,5,io_window_z-4]);
+        translate([io_offset+pcb_loc_x,6+pcb_loc_y,bottom_height-pcb_z+pcb_loc_z+2]) 
+            sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        // subtractive accessories
+        if(accessory_name != "none") {
+            for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                class = accessory_data[a[0]][i];
+                type = accessory_data[a[0]][i+1];
+                loc_x = accessory_data[a[0]][i+2]+io_offset;
+                loc_y = accessory_data[a[0]][i+3]+io_window_y;
+                loc_z = accessory_data[a[0]][i+4]+2;
+                face = accessory_data[a[0]][i+5];
+                rotation = accessory_data[a[0]][i+6];
+                parametric = accessory_data[a[0]][i+7];
+                size_x = accessory_data[a[0]][i+8][0];
+                size_y = accessory_data[a[0]][i+8][1];
+                size_z = accessory_data[a[0]][i+8][2];
+                data = accessory_data[a[0]][i+9];
+                mask = accessory_data[a[0]][i+10];
+
+                if ((class == "sub" && face == "bottom") || class == "suball") {
+                    if(accessory_highlight == false) {
+                        parametric_move_sub(type, loc_x, loc_y, loc_z, face, rotation, parametric,
+                            [size_x,size_y,size_z],data, mask);
+                    }
+                    else {
+                        #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,parametric,
+                            [size_x,size_y,size_z],data, mask);
+
+                    }
+                }
+
+                // create openings for additive 
+                if ((class == "add1" || class == "add2" || class == "model") && mask[0] == true) {
+                    if(accessory_highlight == false) {
+                            parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                    }
+                    else {
+                            #parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                    }
+                }
+            }
+        }
+    }
+}
+

mod/case_bottom.scad

@@ -0,0 +1,778 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: case_bottom
+    DESCRIPTION: creates case bottom for supported designs
+           TODO: none
+
+          USAGE: case_bottom(case_design)
+
+*/
+
+module case_bottom(case_design) {
+
+    lip = 5;
+    vu_rotation = [15,0,0];
+    case_fn = 360;     // circle segments for round cases
+    case_ffn = 90;     // circle segments for fillet of round cases
+
+    difference() {
+        union() {
+            difference() {
+                union() {
+                    if(case_design == "shell") {
+                        difference() {
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,bottom_height/2]) 
+                                cube_fillet_inside([width,depth,bottom_height], 
+                                    vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                        top=[0,0,0,0], bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            translate([(width/2)-wallthick-gap,
+                                (depth/2)-wallthick-gap,(bottom_height/2)+floorthick]) 
+                                    cube_fillet_inside([width-(wallthick*2),depth-(wallthick*2),bottom_height], 
+                                        vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],
+                                            top=[0,0,0,0], bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                        }
+                    }
+                    if(case_design == "panel") {
+                       union() {
+                           translate([-gap,-gap,0]) 
+                                cube([width-(2*wallthick),depth-(2*wallthick),floorthick]);
+                            translate([(width*(1/5))-8-(wallthick+gap),depth-(2*wallthick)-gap-adj,0]) 
+                                    cube([8,wallthick+2*adj,floorthick]);
+                            translate([width-(width*(1/5))-(wallthick+gap),depth-(2*wallthick)-gap-adj,0])
+                                    cube([8,wallthick+2*adj,floorthick]);
+                            translate([(width*(1/5))-8-(wallthick+gap),-wallthick-gap+adj,0])
+                                    cube([8,wallthick+2*adj,floorthick]);
+                            translate([width-(width*(1/5))-(wallthick+gap),-wallthick-gap+adj,0])
+                                    cube([8,wallthick+2*adj,floorthick]);
+                        }
+                    }
+                    if(case_design == "stacked") {
+                        translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,floorthick/2]) 
+                            cube_fillet_inside([width-(2*wallthick),depth-(2*wallthick),floorthick], 
+                                vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                    top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+                    }
+                    if(case_design == "tray" || case_design == "tray_vu5" || case_design == "tray_vu7" || case_design == "tray_sides") {
+                        difference() {
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,(bottom_height)/2]) 
+                                cube_fillet_inside([width,depth,bottom_height], 
+                                    vertical=[0,0,0,0], top=[0,0,0,0], 
+                                        bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,(bottom_height/2)+floorthick]) 
+                                cube_fillet_inside([width-(wallthick*2),depth-(wallthick*2),bottom_height+adj], 
+                                    vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],
+                                        top=[0,0,0,0],bottom=[2,2,2,2], $fn=90);
+                        }
+                        // case nut placement
+                        for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                            class = sbc_data[s[0]][i+1];
+                            type = sbc_data[s[0]][i+2];
+                            id = sbc_data[s[0]][i+3];
+                            pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                            pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                            pcbhole_z = sbc_data[s[0]][i+6];
+                            pcbhole_size = sbc_data[s[0]][i+9][0];
+                            pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                            if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_rear") {
+                                if((pcbhole_y <= 10 && pcbhole_x <= 10) || (ext_bottom_standoffs == true && ext_bottom_rear_left_enable == true)) {
+                                    translate([-adj-gap,wallthick+gap+10,floorthick+3.4]) rotate([90,0,90]) 
+                                        cylinder(d=10, h=4, $fn=6);
+                                }
+                                else {
+                                    translate([-adj-gap,wallthick+gap+2,floorthick+3.4]) rotate([90,0,90]) 
+                                        cylinder(d=10, h=4, $fn=6);
+                                }
+                            }
+                            if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_front") {
+                                if((pcbhole_y >= pcb_depth+case_offset_y-10 && pcbhole_x <= 10) || (ext_bottom_standoffs == true && ext_bottom_front_left_enable == true)) {
+                                    translate([-adj-gap,wallthick-gap+pcb_depth+case_offset_y-14,floorthick+3.4]) 
+                                        rotate([90,0,90]) cylinder(d=10, h=4, $fn=6);
+                                }
+                                else {
+                                    translate([-adj-gap,wallthick+gap+pcb_depth+case_offset_y-8,floorthick+3.4]) 
+                                        rotate([90,0,90]) cylinder(d=10, h=4, $fn=6);
+                                }
+                            }
+                            if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_rear") {
+                                if((pcbhole_y <= 10 && pcbhole_x >= pcb_width-10) || (ext_bottom_standoffs == true && ext_bottom_rear_right_enable == true)) {
+                                    translate([width-wallthick-gap-wallthick-4+adj,wallthick+gap+10,floorthick+3.4])
+                                        rotate([90,0,90]) cylinder(d=10, h=4, $fn=6);
+                                }
+                                else {
+                                    translate([width-wallthick-gap-wallthick-4+adj,wallthick+gap+2,floorthick+3.4])
+                                        rotate([90,0,90]) cylinder(d=10, h=4, $fn=6);
+                                }
+                            }
+                            if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_front") {
+                                if((pcbhole_y >= pcb_depth+case_offset_y-10 && pcbhole_x >= width-10) || (ext_bottom_standoffs == true && ext_bottom_front_right_enable == true)) {
+                                    translate([width-wallthick-gap-wallthick-4+adj,wallthick-gap+pcb_depth+case_offset_y-14,floorthick+3.4]) 
+                                        rotate([90,0,90]) cylinder(d=10, h=4, $fn=6);
+                                }
+                                else {
+                                    translate([width-wallthick-gap-wallthick-4+adj,wallthick+gap+pcb_depth+case_offset_y-8,floorthick+3.4]) 
+                                        rotate([90,0,90]) cylinder(d=10, h=4, $fn=6);
+                                }
+                            }
+                        }   
+                        
+                        // front panel
+                        if(case_design == "tray_vu5" || case_design == "tray_vu7" || case_design == "tray_sides") {
+                            translate([-wallthick-gap,depth-(2*wallthick)-gap,bottom_height-adj]) 
+                                rotate([0,0,0]) cube([width,wallthick,top_height]);
+                        }
+                        else {
+                            translate([-wallthick-gap,depth-(2*wallthick)-gap,bottom_height-adj]) 
+                                rotate([0,0,0]) cube([width,wallthick,top_height-floorthick]);
+                        }
+                        
+                        // rear panel
+                        translate([-wallthick-gap,-wallthick-gap,bottom_height-adj]) 
+                            cube([width,wallthick,top_height-floorthick]);
+                        
+                    }
+                    if(case_design == "round") {
+                        difference() {
+                            translate([pcb_width/2,pcb_depth/2,bottom_height/2]) rotate([0,0,30]) 
+                                cylinder_fillet_inside(h=bottom_height, r=case_diameter/2, 
+                                    top=0, bottom=edge_fillet, $fn=case_fn, fillet_fn=case_ffn, center=true);
+                            translate([pcb_width/2,pcb_depth/2,(bottom_height/2)+floorthick]) rotate([0,0,30]) 
+                                cylinder_fillet_inside(h=bottom_height+adj, r=(case_diameter/2)-lip/2, 
+                                    top=0, bottom=edge_fillet-1, $fn=case_fn, fillet_fn=case_ffn, center=true);
+                            difference() {
+                                translate([pcb_width/2,pcb_depth/2,bottom_height-lip]) rotate([0,0,30]) 
+                                    cylinder(h=lip+adj, r=(case_diameter/2)+1, $fn=case_fn);
+                                translate([pcb_width/2,pcb_depth/2,bottom_height-lip]) rotate([0,0,30]) 
+                                    cylinder(h=lip+2*adj, r=(case_diameter/2)-lip/4, $fn=case_fn);
+                            }
+                        }
+                        difference() {
+                            translate([pcb_width/2,pcb_depth/2,(bottom_height/2)+2*floorthick]) rotate([0,0,30]) 
+                                cylinder_fillet_inside(h=bottom_height+adj+floorthick+lip,
+                                    r=(case_diameter/2)-lip/2,top=0,bottom=edge_fillet-1, $fn=case_fn, 
+                                        fillet_fn=case_ffn, center=true);
+                            if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
+                               sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
+                                    sbc_model != "rpizero" && sbc_model != "rpizero2w") {
+                                translate([-16,(depth/2)-150,-adj])
+                                    cube([width+10,300,case_z-2*floorthick-2]); 
+                                translate([width-9,(depth/2)-62.5,bottom_height-2*adj])
+                                    cube([20,110,top_height-2*floorthick-2]);
+                            }
+                            else {
+                                translate([-width/2,0,-adj])
+                                    cube([300,depth+100,case_z-2*floorthick-2]); 
+                                translate([(-width+50)/2,-50,bottom_height-2*adj])
+                                    cube([width+50,50+adj,top_height-2*floorthick-2]);
+                            }
+                        }
+                    }
+                    if(case_design == "hex") {
+                        if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
+                            sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
+                                sbc_model != "rpizero" && sbc_model != "rpizero2w") {
+                            difference() {
+                                translate([pcb_width/2,pcb_depth/2,bottom_height/2]) rotate([0,0,30]) 
+                                    cylinder_fillet_inside(h=bottom_height, r=case_diameter/2, 
+                                        top=0, bottom=edge_fillet, $fn=6, fillet_fn=case_ffn, center=true);
+                                translate([pcb_width/2,pcb_depth/2,(bottom_height/2)+floorthick]) rotate([0,0,30]) 
+                                    cylinder_fillet_inside(h=bottom_height+adj,r=(case_diameter/2)-lip/2,top=0, 
+                                        bottom=edge_fillet-1,$fn=6,fillet_fn=case_ffn, center=true);
+                                difference() {
+                                    translate([pcb_width/2,pcb_depth/2,bottom_height-lip]) rotate([0,0,30]) 
+                                        cylinder(h=lip+adj,r=(case_diameter/2)+1, $fn=6);
+                                    translate([pcb_width/2,pcb_depth/2,bottom_height-lip]) rotate([0,0,30]) 
+                                        cylinder(h=lip+2*adj,r=(case_diameter/2)-lip/4, $fn=6);
+                                }
+                            }
+                            difference() {
+                                translate([pcb_width/2,pcb_depth/2,(bottom_height/2)+2*floorthick]) rotate([0,0,30]) 
+                                    cylinder_fillet_inside(h=bottom_height+adj+floorthick+lip,
+                                        r=(case_diameter/2)-lip/2,top=0, bottom=edge_fillet-1, $fn=6, 
+                                            fillet_fn=case_ffn, center=true);
+                                translate([-16,(depth/2)-150,-adj])
+                                    cube([width+10,300,case_z-2*floorthick-2]); 
+                                translate([width-9,(depth/2)-62.5,bottom_height-2*adj])
+                                    cube([20,110,top_height-2*floorthick-2]); 
+                            }
+                        }
+                        else {
+                            difference() {
+                                translate([pcb_width/2,pcb_depth/2,bottom_height/2]) rotate([0,0,0]) 
+                                    cylinder_fillet_inside(h=bottom_height, r=hex_diameter/2, 
+                                        top=0, bottom=edge_fillet, $fn=6, fillet_fn=case_ffn, center=true);
+                                translate([pcb_width/2,pcb_depth/2,(bottom_height/2)+floorthick]) rotate([0,0,0]) 
+                                    cylinder_fillet_inside(h=bottom_height+adj,r=(hex_diameter/2)-lip/2,top=0, 
+                                        bottom=edge_fillet-1,$fn=6,fillet_fn=case_ffn, center=true);
+                                difference() {
+                                    translate([pcb_width/2,pcb_depth/2,bottom_height-lip]) rotate([0,0,0]) 
+                                        cylinder(h=lip+adj,r=(hex_diameter/2)+1, $fn=6);
+                                    translate([pcb_width/2,pcb_depth/2,bottom_height-lip]) rotate([0,0,0]) 
+                                        cylinder(h=lip+2*adj,r=(hex_diameter/2)-lip/4, $fn=6);
+                                }
+                            }
+                            difference() {
+                                translate([pcb_width/2,pcb_depth/2,(bottom_height/2)+2*floorthick]) rotate([0,0,0]) 
+                                    cylinder_fillet_inside(h=bottom_height+adj+floorthick+lip,
+                                        r=(hex_diameter/2)-lip/2,top=0, bottom=edge_fillet-1, $fn=6, 
+                                            fillet_fn=case_ffn, center=true);
+                                translate([-width/2,0,-adj])
+                                    cube([300,depth+100,case_z-2*floorthick-2]); 
+                                translate([(-width+50)/2,-50,bottom_height-2*adj])
+                                    cube([width+50,50+adj,top_height-2*floorthick-2]);
+                            }
+                        }
+                    }
+                    if(case_design == "snap") {
+                        difference() {
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,(floorthick+case_z)/2]) 
+                                cube_fillet_inside([width,depth,floorthick+case_z], 
+                                    vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                        top=[0,0,0,0], bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,floorthick+(floorthick+case_z)/2]) 
+                                cube_fillet_inside([width-(wallthick*2),depth-(wallthick*2),case_z+floorthick], 
+                                        vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],
+                                            top=[0,0,0,0], bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            // snap top indent
+                            translate([-gap-wallthick+.75,(depth/2)-(depth*.75)/2-gap-wallthick,case_z-.5]) 
+                                rotate([0,45,0]) cube([4,depth*.75,4]);
+                            translate([width-wallthick-gap-6.25,(depth/2)-(depth*.75)/2-gap-wallthick,case_z-.5])
+                                rotate([0,45,0]) cube([4,depth*.75,4]);
+                        }
+                    }
+                    if(case_design == "fitted") {
+                        difference() {
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z/2]) 
+                                cube_fillet_inside([width,depth,case_z], 
+                                    vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                        top=[0,0,0,0], bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            translate([(width/2)-wallthick-gap,
+                                (depth/2)-wallthick-gap,(case_z/2)+floorthick]) 
+                                    cube_fillet_inside([width-(wallthick*2),depth-(wallthick*2),case_z], 
+                                        vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],
+                                            top=[0,0,0,0], bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            difference() {
+                                translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-lip/2]) 
+                                    cube_fillet_inside([width+adj,depth+adj,lip+adj], 
+                                        vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                            top=[0,0,0,0],bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                                
+                                translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-lip/2]) 
+                                    cube_fillet_inside([width-wallthick,depth-wallthick,lip+adj], 
+                                        vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],top=[0,0,0,0],
+                                            bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            }
+                        }
+                    }
+                    // additive accessories
+                    if(accessory_name != "none") {
+                        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                            class = accessory_data[a[0]][i];
+                            type = accessory_data[a[0]][i+1];
+                            loc_x = accessory_data[a[0]][i+2];
+                            loc_y = accessory_data[a[0]][i+3];
+                            loc_z = accessory_data[a[0]][i+4];
+                            face = accessory_data[a[0]][i+5];
+                            rotation = accessory_data[a[0]][i+6];
+                            parametric = accessory_data[a[0]][i+7];
+                            size = accessory_data[a[0]][i+8];
+                            data = accessory_data[a[0]][i+9];
+                            mask = accessory_data[a[0]][i+10];
+
+                            if(class == "add1" && face == "bottom") {
+                                parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, [false,mask[1],mask[2],mask[3]]);
+                            }
+                        }
+                    }
+                }
+                // tray side attachment holes
+                if(case_design == "tray" || case_design == "tray_vu5" || case_design == "tray_vu7" || case_design == "tray_sides") {
+                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                        class = sbc_data[s[0]][i+1];
+                        type = sbc_data[s[0]][i+2];
+                        id = sbc_data[s[0]][i+3];
+                        pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                        pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                        pcbhole_z = sbc_data[s[0]][i+6];
+                        pcbhole_size = sbc_data[s[0]][i+9][0];
+                        pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                        if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_rear") {
+                            if((pcbhole_y <= 10 && pcbhole_x <= 10) || (ext_bottom_standoffs == true && ext_bottom_rear_left_enable == true)) {
+                                translate([-wallthick-gap-adj-6,wallthick+gap+10,floorthick+3.4]) rotate([0,90,0]) 
+                                    cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([-gap+.6,wallthick+gap+10,floorthick+3.4]) rotate([90,0,90]) 
+                                    cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                            else {
+                                translate([-wallthick-gap-adj-6,wallthick+gap+2,floorthick+3.4]) rotate([0,90,0]) 
+                                    cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([-gap+.6,wallthick+gap+2,floorthick+3.4]) rotate([90,0,90]) 
+                                    cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                        }
+                        if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_front") {
+                            if((pcbhole_y >= pcb_depth+case_offset_y-10 && pcbhole_x <= 10) || (ext_bottom_standoffs == true && ext_bottom_front_left_enable == true)) {
+                                translate([-wallthick-gap-adj-6,wallthick-gap+pcb_depth+case_offset_y-14,
+                                    floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([-gap+.6,wallthick-gap+pcb_depth+case_offset_y-14,floorthick+3.4]) 
+                                    rotate([90,0,90]) cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                            else {
+echo(pcb_depth+case_offset_y-10);
+                                translate([-wallthick-gap-adj-6,wallthick+gap+pcb_depth+case_offset_y-8,
+                                    floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([-gap+.6,wallthick+gap+pcb_depth+case_offset_y-8,floorthick+3.4]) 
+                                    rotate([90,0,90]) cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                        }
+                        if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_rear") {
+                            if((pcbhole_y <= 10 && pcbhole_x >= pcb_width-10) || (ext_bottom_standoffs == true && ext_bottom_rear_right_enable == true)) {
+                                translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+10,floorthick+3.4]) 
+                                    rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([width-3.5-(2*wallthick)-gap-.6,wallthick+gap+10,floorthick+3.4]) 
+                                    rotate([90,0,90]) cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                            else {
+                                translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+2,floorthick+3.4]) 
+                                    rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([width-3.5-(2*wallthick)-gap-.6,wallthick+gap+2,floorthick+3.4]) 
+                                    rotate([90,0,90]) cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                        }
+                        if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_front") {
+                            if((pcbhole_y >= pcb_depth+case_offset_y-10 && pcbhole_x >= width-10) || (ext_bottom_standoffs == true && ext_bottom_front_right_enable == true)) {
+                                translate([width-3*(wallthick+gap)-adj,wallthick-gap+pcb_depth+case_offset_y-14,
+                                    floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([width-3.5-(2*wallthick)-gap-.6,wallthick-gap+pcb_depth+case_offset_y-14,
+                                    floorthick+3.4])rotate([90,0,90]) cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                            else {
+                                translate([width-3*(wallthick+gap)-adj,wallthick-gap+pcb_depth+case_offset_y-8,
+                                    floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                translate([width-3.5-(2*wallthick)-gap-.6,wallthick-gap+pcb_depth+case_offset_y-8,
+                                    floorthick+3.4])rotate([90,0,90]) cylinder(d=6.6, h=3.5, $fn=6);
+                            }
+                        }
+                    }
+                }
+                // pcb standoff holes
+                if(sbc_bottom_standoffs == true) {
+                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                        class = sbc_data[s[0]][i+1];
+                        type = sbc_data[s[0]][i+2];
+                        id = sbc_data[s[0]][i+3];
+                        pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                        pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                        pcbhole_z = sbc_data[s[0]][i+6];
+                        pcbhole_size = sbc_data[s[0]][i+9][0];
+                        pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_rear" && 
+                            bottom_rear_left_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_front" && 
+                            bottom_front_left_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_rear" && 
+                            bottom_rear_right_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_front" && 
+                            bottom_front_right_enable == true && bottom_standoff[6] != "blind") {
+                                translate([pcbhole_x,pcbhole_y,-1]) cylinder(d=bottom_standoff[4]-.2, h=bottom_height);
+                        }
+
+                    }
+                }
+                // extended standoff holes
+                if(ext_bottom_standoffs == true) {
+                    // right-rear standoff
+                    if(((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 || pcb_loc_y >= 10)) && 
+                            ext_bottom_rear_right_enable == true && ext_bottom_standoff[6] != "blind") {
+                        translate([width-ext_bottom_standoff_support_size/4-(2*(wallthick+gap))-(corner_fillet/2),
+                            (corner_fillet/2)+ext_bottom_standoff_support_size/4,-1]) cylinder(d=ext_bottom_standoff[4]-.2, h=bottom_height);
+                    }
+                    // right-front standoff
+                    if(((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth >= 10) || 
+                        (width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth <= 10) ||
+                            (width-pcb_loc_x-pcb_width-(gap+2*wallthick) <= 10 && depth-pcb_loc_y-pcb_depth >= 10)) &&
+                                ext_bottom_front_right_enable == true && ext_bottom_standoff[6] != "blind") {
+                        translate([width-ext_bottom_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),
+                            depth-ext_bottom_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),-1]) 
+                                cylinder(d=ext_bottom_standoff[4]-.2, h=bottom_height);
+                    }
+                    // left-rear standoff
+                    if((pcb_loc_x >= 10 || pcb_loc_y >= 10) && ext_bottom_rear_left_enable == true && ext_bottom_standoff[6] != "blind") {
+                        translate([(corner_fillet/2)+ext_bottom_standoff_support_size/4,
+                            (corner_fillet/2)+ext_bottom_standoff_support_size/4,-1]) cylinder(d=ext_bottom_standoff[4]-.2, h=bottom_height);
+                    }
+                    // left-front standoff
+                    if(((pcb_loc_x >= 10 && (depth-(pcb_loc_y+pcb_depth)) >= 10) || 
+                        (pcb_loc_x <= 10 && (depth-(pcb_loc_y+pcb_depth)) >= 10) || 
+                            (pcb_loc_x >= 10 && (depth-(pcb_loc_y+pcb_depth)) <= 10)) &&
+                                ext_bottom_front_left_enable == true && ext_bottom_standoff[6] != "blind") {
+                        translate([(corner_fillet/2)+ext_bottom_standoff_support_size/4,
+                            depth-ext_bottom_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),-1]) 
+                                cylinder(d=ext_bottom_standoff[4]-.2, h=bottom_height);
+                    }
+                }
+                // bottom cover pattern
+                if(bottom_cover_pattern != "solid") {
+                    if(bottom_cover_pattern == "hex_5mm") {
+                        translate([1,0,-2]) vent_hex((width)/3.75,(depth)/6,floorthick+4,5,1.5,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "hex_8mm") {
+                        translate([1,2,-2]) vent_hex((width)/5.5,(depth)/9.5,floorthick+4,8,1.5,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "linear_vertical") {
+                        translate([0,-gap,-2]) vent(wallthick,depth-2*wallthick-gap,floorthick+4,1,1,(width-2*wallthick-gap)/4,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "linear_horizontal") {
+                        translate([-gap,-gap,-2]) vent(width-2*wallthick-gap,wallthick,floorthick+4,1,(depth-2*wallthick-gap)/3,1,"horizontal");
+                    }
+                    if(bottom_cover_pattern == "astroid") {
+                        for(c=[3:12:depth-8]) {
+                            for(r=[4:12:width-8]) {
+                                translate([r,c,-4]) linear_extrude(floorthick+5) import("./dxf/astroid_8mm.dxf");
+                            }
+                        }   
+                    }
+                }
+                // rear io shield opening for standard form motherboards
+                if(rear_io_shield == true) {
+                    if(sbc_model == "mini-stx_thin") {
+                        translate([6.2+pcb_loc_x,-4.5,-4.65+bottom_height-pcb_z+pcb_loc_z]) cube([123.95, 10+pcb_loc_y, 25]);
+                    }
+                    if(sbc_model == "mini-stx") {
+                        translate([6.2+pcb_loc_x,-4.5,-4.65+bottom_height-pcb_z+pcb_loc_z]) cube([123.95, 10+pcb_loc_y, 40]);
+                    }
+                    if(sbc_model == "mini-itx_thin") {
+                        translate([-2.62+pcb_loc_x,-4.5,-2.25+bottom_height-pcb_z+pcb_loc_z]) cube([158.75, 10+pcb_loc_y, 25]);
+                    }
+                    if(sbc_model != "mini-stx_thin" && sbc_model != "mini-stx" && sbc_model != "mini-itx_thin") {
+                        translate([-2.62+pcb_loc_x,-4.5,-2.25+bottom_height-pcb_z+pcb_loc_z]) cube([158.75, 10+pcb_loc_y, 44]);
+                    }
+                }
+            }
+            // pcb standoffs
+            if(sbc_bottom_standoffs  == true) {
+                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                        class = sbc_data[s[0]][i+1];
+                        type = sbc_data[s[0]][i+2];
+                        id = sbc_data[s[0]][i+3];
+                        pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                        pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                        pcbhole_z = sbc_data[s[0]][i+6];
+                        pcbhole_size = sbc_data[s[0]][i+9][0];
+                        pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                    if(class == "pcbhole" && id == pcb_id && 
+                        (pcbhole_pos == "left_rear" || pcbhole_pos == "left_front" || pcbhole_pos == "right_rear" || pcbhole_pos == "right_front")) {
+                        if (pcbhole_pos == "left_rear" && bottom_rear_left_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_rear_left_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_rear_left_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "left_front" && bottom_front_left_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_front_left_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_front_left_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "right_rear" && bottom_rear_right_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_rear_right_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_rear_right_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "right_front" && bottom_front_right_enable == true) {
+                            bottom_support = bottom_sidewall_support == true ? bottom_front_right_support : "none";
+                            pcb_standoff = [bottom_standoff[0],
+                                                bottom_standoff[1],
+                                                bottom_height-pcb_z+pcb_loc_z+bottom_front_right_adjust,
+                                                bottom_standoff[3],
+                                                bottom_standoff[4],
+                                                bottom_standoff[5],
+                                                bottom_standoff[6],
+                                                bottom_standoff[7],
+                                                bottom_support,
+                                                bottom_standoff[9],
+                                                bottom_standoff[10],
+                                                bottom_standoff[11],
+                                                bottom_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,0]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                    }
+                }
+            }
+
+            // extended standoffs
+            if(ext_bottom_standoffs == true) {
+                // extended right-rear standoff
+                if((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 || pcb_loc_y >= 10) && ext_bottom_rear_right_enable == true) {
+                    extended_standoff = [ext_bottom_standoff[0],
+                                        ext_bottom_standoff[1],
+                                        bottom_height+ext_bottom_rear_right_adjust,
+                                        ext_bottom_standoff[3],
+                                        ext_bottom_standoff[4],
+                                        ext_bottom_standoff[5],
+                                        ext_bottom_standoff[6],
+                                        ext_bottom_standoff[7],
+                                        ext_bottom_rear_right_support,
+                                        ext_bottom_standoff[9],
+                                        ext_bottom_standoff[10],
+                                        ext_bottom_standoff[11],
+                                        ext_bottom_standoff[12]];
+                    translate([width-ext_top_standoff_support_size/4-(2*(wallthick+gap))-(corner_fillet/2),
+                        (corner_fillet/2)+ext_top_standoff_support_size/4,0]) standoff(extended_standoff,[false,10,2,"default"]);
+                }
+                // extended right-front standoff
+                if(((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth >= 10) || 
+                    (width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth <= 10) ||
+                        (width-pcb_loc_x-pcb_width-(gap+2*wallthick) <= 10 && depth-pcb_loc_y-pcb_depth >= 10)) &&
+                            ext_bottom_front_right_enable == true) {
+                    extended_standoff = [ext_bottom_standoff[0],
+                                        ext_bottom_standoff[1],
+                                        bottom_height+ext_bottom_front_right_adjust,
+                                        ext_bottom_standoff[3],
+                                        ext_bottom_standoff[4],
+                                        ext_bottom_standoff[5],
+                                        ext_bottom_standoff[6],
+                                        ext_bottom_standoff[7],
+                                        ext_bottom_front_right_support,
+                                        ext_bottom_standoff[9],
+                                        ext_bottom_standoff[10],
+                                        ext_bottom_standoff[11],
+                                        ext_bottom_standoff[12]];
+                    translate([width-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),
+                        depth-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),0]) standoff(extended_standoff,[false,10,2,"default"]);
+                }
+                // extended left-rear standoff
+                if((pcb_loc_x >= 10 || pcb_loc_y >= 10) && ext_bottom_rear_left_enable == true) {
+                    extended_standoff = [ext_bottom_standoff[0],
+                                        ext_bottom_standoff[1],
+                                        bottom_height+ext_bottom_rear_left_adjust,
+                                        ext_bottom_standoff[3],
+                                        ext_bottom_standoff[4],
+                                        ext_bottom_standoff[5],
+                                        ext_bottom_standoff[6],
+                                        ext_bottom_standoff[7],
+                                        ext_bottom_rear_left_support,
+                                        ext_bottom_standoff[9],
+                                        ext_bottom_standoff[10],
+                                        ext_bottom_standoff[11],
+                                        ext_bottom_standoff[12]];
+                    translate([(corner_fillet/2)+ext_top_standoff_support_size/4,
+                        (corner_fillet/2)+ext_top_standoff_support_size/4,0]) standoff(extended_standoff,[false,10,2,"default"]);
+                }
+                // extended left-front standoff
+                if(((pcb_loc_x >= 10 && depth-(pcb_loc_y+pcb_depth) >= 10) || 
+                        (pcb_loc_x <= 10 && depth-(pcb_loc_y+pcb_depth) >= 10) || 
+                            (pcb_loc_x >= 10 && depth-(pcb_loc_y+pcb_depth) <= 10)) && 
+                                ext_bottom_front_left_enable == true) {
+                    extended_standoff = [ext_bottom_standoff[0],
+                                        ext_bottom_standoff[1],
+                                        bottom_height+ext_bottom_front_left_adjust,
+                                        ext_bottom_standoff[3],
+                                        ext_bottom_standoff[4],
+                                        ext_bottom_standoff[5],
+                                        ext_bottom_standoff[6],
+                                        ext_bottom_standoff[7],
+                                        ext_bottom_front_left_support,
+                                        ext_bottom_standoff[9],
+                                        ext_bottom_standoff[10],
+                                        ext_bottom_standoff[11],
+                                        ext_bottom_standoff[12]];
+                    translate([(corner_fillet/2)+ext_top_standoff_support_size/4,
+                        depth-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),0]) 
+                            standoff(extended_standoff,[false,10,2,"default"]);
+                }
+            }
+        }
+        // subtractive accessories
+        if(accessory_name != "none") {
+            for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                class = accessory_data[a[0]][i];
+                type = accessory_data[a[0]][i+1];
+                loc_x = accessory_data[a[0]][i+2];
+                loc_y = accessory_data[a[0]][i+3];
+                loc_z = accessory_data[a[0]][i+4];
+                face = accessory_data[a[0]][i+5];
+                rotation = accessory_data[a[0]][i+6];
+                parametric = accessory_data[a[0]][i+7];
+                size_x = accessory_data[a[0]][i+8][0];
+                size_y = accessory_data[a[0]][i+8][1];
+                size_z = accessory_data[a[0]][i+8][2];
+                data = accessory_data[a[0]][i+9];
+                mask = accessory_data[a[0]][i+10];
+
+                if ((class == "sub" && face == "bottom") || class == "suball") {
+                    if(accessory_highlight == false) {
+                        parametric_move_sub(type, loc_x, loc_y, loc_z, face, rotation, parametric,
+                            [size_x,size_y,size_z],data, mask);
+                    }
+                    else {
+                        #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,parametric,
+                            [size_x,size_y,size_z],data, mask);
+
+                    }
+                }
+
+                // create openings for additive 
+                if ((class == "add1" || class == "add2" || class == "model") && mask[0] == true) {
+                    if(accessory_highlight == false) {
+                            parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                    }
+                    else {
+                            #parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,[true,mask[1],mask[2],mask[3]]);
+                    }
+                }
+            }
+
+        }
+        // ui access panel
+        if(bottom_access_panel_enable == true) {
+            if(access_panel_rotation == 0) {
+                translate([access_panel_location[0],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                    access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+            }
+            if(access_panel_rotation == 90) {
+                translate([access_panel_location[0]+access_panel_size[1],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                    access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+            }
+            if(access_panel_rotation == 180) {
+                translate([access_panel_location[0]+access_panel_size[0],access_panel_location[1]+access_panel_size[1],0]) rotate([0,0,access_panel_rotation]) 
+                    access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+            }
+            if(access_panel_rotation == 270) {
+                translate([access_panel_location[0],access_panel_location[1]+access_panel_size[0], 0]) rotate([0,0,access_panel_rotation]) 
+                    access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [true,10,2,"default"]);
+            }
+        }
+        // sbc openings
+        if(sbc_highlight == true) {
+            #translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj]) 
+                sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        }
+        else {
+            translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj]) 
+                sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        }
+        // indents
+        if(indents == true) {
+
+            for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                class = sbc_data[s[0]][i+1];
+                type = sbc_data[s[0]][i+2];
+                id = sbc_data[s[0]][i+3];
+                loc_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                loc_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                loc_z = sbc_data[s[0]][i+6]+pcb_loc_z;
+                side = sbc_data[s[0]][i+7];
+                rotation = sbc_data[s[0]][i+8];
+
+//                indent(loc_x, loc_y, bottom_height+pcb_loc_z-adj, rotation[2], side, class, type, wallthick, gap, floorthick, pcb_z);
+                indent(loc_x, loc_y, bottom_height+pcb_loc_z-adj, rotation[2], side, class, type, wallthick, gap, floorthick, pcb_z);
+            }   
+        }
+        // clean fillets
+        if(case_design == "shell") {
+            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,bottom_height/2]) 
+                cube_negative_fillet([width,depth,bottom_height], radius=-1,
+                    vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], top=[0,0,0,0], 
+                            bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+        }
+    }
+    // additive accessories
+    if(accessory_name != "none") {
+        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+            class = accessory_data[a[0]][i];
+            type = accessory_data[a[0]][i+1];
+            loc_x = accessory_data[a[0]][i+2];
+            loc_y = accessory_data[a[0]][i+3];
+            loc_z = accessory_data[a[0]][i+4];
+            face = accessory_data[a[0]][i+5];
+            rotation = accessory_data[a[0]][i+6];
+            parametric = accessory_data[a[0]][i+7];
+            size = accessory_data[a[0]][i+8];
+            data = accessory_data[a[0]][i+9];
+            mask = accessory_data[a[0]][i+10];
+
+            if(class == "add2" && face == "bottom") {
+                parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, [false,mask[1],mask[2],mask[3]]);
+            }
+        }
+    }
+    // ui access port
+    if(bottom_access_panel_enable == true) {
+        if(access_panel_rotation == 0) {
+            translate([access_panel_location[0],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 90) {
+            translate([access_panel_location[0]+access_panel_size[1],access_panel_location[1], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 180) {
+            translate([access_panel_location[0]+access_panel_size[0],access_panel_location[1]+access_panel_size[1],0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+        if(access_panel_rotation == 270) {
+            translate([access_panel_location[0],access_panel_location[1]+access_panel_size[0], 0]) rotate([0,0,access_panel_rotation]) 
+                access_panel([access_panel_size[0],access_panel_size[1],floorthick], access_panel_orientation, [false,10,2,"default"]);
+        }
+    }
+}

mod/case_folded.scad

@@ -0,0 +1,292 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: case_folded
+    DESCRIPTION: creates folded case flat blanks for supported designs
+           TODO: none
+
+          USAGE: case_folded(case_design)
+
+                             case_design = paper_full-top, paper_split-top
+*/
+
+module case_folded(case_design) {
+
+section_position = 2;
+ba = bend_allowance;
+slit_len = pcb_depth < pcb_width ? pcb_depth/10 : pcb_width/10;
+slit_width = material_thickness;
+slit_offset = pcb_depth < pcb_width ? pcb_depth/10 : pcb_width/10;
+fold_height = pcb_tmaxz+bottom_clearence+pcb_z+ba;
+flap_y = 12;
+tab_x = pcb_depth/4;
+tab_y = fold_height/2;
+tab_inset = 6;
+
+    if(case_design == "paper_split-top") {
+        // rear
+        difference() {
+            union() {
+                folded_base(fold_height, ba, flap_y, tab_x, tab_y, tab_inset, slit_len, slit_width, slit_offset);
+                translate([0, -fold_height-(pcb_depth/2)-ba, 0]) 
+                    cube([pcb_width, (pcb_depth/2)+ba, material_thickness]);
+                translate([0, pcb_depth+fold_height, 0]) 
+                    cube([pcb_width, (pcb_depth/2)+ba, material_thickness]);
+
+                // flaps rear left
+                translate([-tab_y, -fold_height+tab_inset-(pcb_depth/2), 0]) 
+                    slab_r([tab_y, tab_x, material_thickness], [tab_x/2,tab_x/2,.1,.1]);
+
+                // flaps rear right
+                translate([pcb_width, -fold_height-(pcb_depth/2)+tab_inset, 0]) 
+                    slab_r([tab_y, tab_x, material_thickness], [.1,.1,tab_x/2,tab_x/2]);
+
+                // flaps front left
+                translate([-tab_y, pcb_depth+fold_height-tab_inset+tab_x, 0]) 
+                    slab_r([tab_y, tab_x, material_thickness], [tab_x/2,tab_x/2,.1,.1]);
+
+                // flaps front right
+                translate([pcb_width, pcb_depth+fold_height-tab_inset+tab_x, 0]) 
+                    slab_r([tab_y, tab_x, material_thickness], [.1,.1,tab_x/2,tab_x/2]);
+
+                // flaps left rear
+                difference() {
+                    translate([-(fold_height), 0, 0]) 
+                        linear_extrude(material_thickness) polygon([[0, 0], 
+                            [1, (-pcb_depth/4)],
+                            [(fold_height)-2, (-pcb_depth/4)],
+                            [(fold_height), 0],
+                            [0, 0]]);
+                    translate([-bottom_clearence, 0, section_position]) rotate([90, 0, 270]) 
+                        sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+                // flaps left front
+                difference() {
+                    translate([-(fold_height), pcb_depth, 0]) 
+                        linear_extrude(material_thickness) polygon([[0, 0], 
+                            [1, (pcb_depth/4)],
+                            [(fold_height)-2, (pcb_depth/4)],
+                            [(fold_height), 0],
+                            [0, 0]]);
+                        translate([-bottom_clearence, pcb_depth, pcb_depth+section_position]) rotate([-90, 0, 90]) 
+                        sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+                // flaps right rear
+                difference() {
+                    translate([pcb_width, 0, 0]) 
+                        linear_extrude(material_thickness) polygon([[0, 0], 
+                            [2, (-pcb_depth/4)],
+                            [(fold_height)-1, (-pcb_depth/4)],
+                            [(fold_height), 0],
+                            [0, 0]]);
+                    translate([bottom_clearence+pcb_width, -pcb_width, section_position]) rotate([90, 0, 90]) 
+                        sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+
+                // flaps right front
+                difference() {
+                translate([pcb_width, pcb_depth, 0]) 
+                    linear_extrude(material_thickness) polygon([[0, 0], 
+                        [2, (pcb_depth/4)],
+                        [(fold_height)-1, (pcb_depth/4)],
+                        [(fold_height), 0],
+                        [0, 0]]);
+                    translate([bottom_clearence+pcb_width, pcb_width+pcb_depth, section_position+pcb_depth])
+                        rotate([270, 0, 270]) sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+            }
+
+            translate([0, -fold_height, pcb_tmaxz+2+material_thickness]) rotate([180, 0, 0]) 
+                sbc(sbc_model, cooling, 0, "disable", "disable", true);
+            translate([0, 2*pcb_depth+fold_height, pcb_tmaxz+2+material_thickness]) rotate([180, 0, 0]) 
+                sbc(sbc_model, cooling, 0, "disable", "disable", true);
+        }
+        translate([0, -fold_height-(pcb_depth/2)-ba, 0]) cube([pcb_width, 2, material_thickness]);
+        translate([0, pcb_depth+fold_height+(pcb_depth/2)-ba, 0]) cube([pcb_width, 2, material_thickness]);
+    }
+
+    if(case_design == "paper_full-top") {
+        // rear
+        difference() {
+            union() {
+                folded_base(fold_height, ba, flap_y, tab_x, tab_y, tab_inset, slit_len, slit_width, slit_offset);
+                translate([0, -fold_height-pcb_depth-ba, 0]) 
+                    cube([pcb_width, pcb_depth+ba, material_thickness]);
+                translate([0, pcb_depth+fold_height, 0]) 
+                    cube([pcb_width, (pcb_depth/4)+ba, material_thickness]);
+
+                // flaps rear left
+                translate([tab_inset, -fold_height-pcb_depth-tab_y, 0]) 
+                    slab_r([tab_x, tab_y, material_thickness], [tab_x/2,.1,.1,tab_x/2]);
+
+                // flaps rear right
+                translate([pcb_width-tab_x-tab_inset, -fold_height-pcb_depth-tab_y, 0]) 
+                    slab_r([tab_x, tab_y, material_thickness], [tab_x/2,.1,.1,tab_x/2]);
+
+                // flaps left rear
+                difference() {
+                    translate([-(fold_height), 0, 0]) 
+                        linear_extrude(material_thickness) polygon([[0, 0], 
+                            [1, (-pcb_depth/4)],
+                            [(fold_height)-2, (-pcb_depth/4)],
+                            [(fold_height), 0],
+                            [0, 0]]);
+                    translate([-bottom_clearence, 0, section_position]) rotate([90, 0, 270]) 
+                        sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+                // flaps left front
+                difference() {
+                    translate([-(fold_height), pcb_depth, 0]) 
+                        linear_extrude(material_thickness) polygon([[0, 0], 
+                            [1, (pcb_depth/4)],
+                            [(fold_height)-2, (pcb_depth/4)],
+                            [(fold_height), 0],
+                            [0, 0]]);
+                        translate([-bottom_clearence, pcb_depth, pcb_depth+section_position]) rotate([-90, 0, 90]) 
+                        sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+                // flaps right rear
+                difference() {
+                    translate([pcb_width, 0, 0]) 
+                        linear_extrude(material_thickness) polygon([[0, 0], 
+                            [2, (-pcb_depth/4)],
+                            [(fold_height)-1, (-pcb_depth/4)],
+                            [(fold_height), 0],
+                            [0, 0]]);
+                    translate([bottom_clearence+pcb_width, -pcb_width, section_position]) rotate([90, 0, 90]) 
+                        sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+
+                // flaps right front
+                difference() {
+                translate([pcb_width, pcb_depth, 0]) 
+                    linear_extrude(material_thickness) polygon([[0, 0], 
+                        [2, (pcb_depth/4)],
+                        [(fold_height)-1, (pcb_depth/4)],
+                        [(fold_height), 0],
+                        [0, 0]]);
+                    translate([bottom_clearence+pcb_width, pcb_width+pcb_depth, section_position+pcb_depth])
+                        rotate([270, 0, 270]) sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+                }
+            }
+            // top closure tab slits
+            translate([tab_inset, pcb_depth+fold_height, 0]) cube([tab_x, slit_width, material_thickness+(2*adj)]);
+            translate([pcb_width-tab_x-tab_inset, pcb_depth+fold_height, 0]) 
+                cube([tab_x, slit_width, material_thickness+2*adj]);
+
+            translate([0, -fold_height, pcb_tmaxz+2+material_thickness]) rotate([180, 0, 0]) 
+                sbc(sbc_model, cooling, 0, "disable", "disable", true);
+            translate([0, 2*pcb_depth+fold_height, pcb_tmaxz+2+material_thickness]) rotate([180, 0, 0]) 
+                sbc(sbc_model, cooling, 0, "disable", "disable", true);
+        }
+    }
+}
+
+
+// base folding case
+module folded_base(fold_height, ba, flap_y, tab_x, tab_y, tab_inset, slit_len, slit_width, slit_offset) {
+
+section_position = 2;
+
+    // rear
+    difference() {
+        translate([0, -fold_height, 0]) cube([pcb_width, fold_height, material_thickness]);
+        // folding slits
+        translate([slit_offset, -fold_height, -adj]) 
+            cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width/2-slit_len/2, -fold_height, -adj]) 
+            cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width-slit_offset-slit_len, -fold_height, -adj]) 
+            cube([slit_len, slit_width, material_thickness+(2*adj)]);
+
+        translate([0, -bottom_clearence, section_position]) rotate([90, 0, 0]) 
+            sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+    }
+    // left side
+    difference() {
+        union() {
+            translate([-fold_height, 0, 0]) 
+                cube([fold_height, pcb_depth, material_thickness]);
+            translate([-fold_height-flap_y, 0, 0]) cube([flap_y, pcb_depth, material_thickness]);
+        }
+        // folding slits
+        translate([-fold_height, (pcb_depth/2)+tab_inset, -adj]) 
+            cube([slit_width, tab_x, material_thickness+(2*adj)]);
+
+        translate([-fold_height, (pcb_depth/2)-tab_x-tab_inset, -adj]) 
+            cube([slit_width, tab_x, material_thickness+(2*adj)]);
+
+        translate([-bottom_clearence, 0, section_position]) rotate([0, -90, 0]) 
+            sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+
+    }    
+    // front
+    difference() {
+        translate([0, pcb_depth, 0]) cube([pcb_width, fold_height, material_thickness]);
+        // folding slits
+        translate([slit_offset, pcb_depth+fold_height-slit_width, -adj]) 
+            cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width/2-slit_len/2, pcb_depth+fold_height-slit_width, -adj]) 
+            cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width-slit_offset-slit_len, pcb_depth+fold_height-slit_width, -adj]) 
+            cube([slit_len, slit_width, material_thickness+(2*adj)]);
+
+        translate([0, pcb_depth+bottom_clearence, pcb_depth+section_position]) rotate([-90, 0, 0]) 
+            sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+    }
+    // right side
+    difference() {
+        union() {
+            translate([pcb_width, 0, 0]) cube([fold_height, pcb_depth, material_thickness]);
+            translate([pcb_width+fold_height, 0, 0]) 
+                cube([flap_y, pcb_depth, material_thickness]);
+        }
+        // folding slits
+        translate([pcb_width+fold_height, (pcb_depth/2)+tab_inset, -adj]) 
+            cube([slit_width, tab_x, material_thickness+(2*adj)]);
+        translate([pcb_width+fold_height, (pcb_depth/2)-tab_x-tab_inset, -adj]) 
+            cube([slit_width, tab_x, material_thickness+(2*adj)]);
+
+        translate([pcb_width+bottom_clearence, 0, pcb_width+section_position]) rotate([0, 90, 0]) 
+            sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+    }
+    // pcb section
+    difference() {
+        cube([pcb_width, pcb_depth, material_thickness]);
+        translate([0, 0, 1+material_thickness]) sbc(sbc_model, "disable", 0, gpio_opening, uart_opening, true);
+        // pcb folding slits rear
+        translate([slit_offset, 0, -adj]) cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width/2-slit_len/2, 0, -adj]) cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width-slit_offset-slit_len, 0, -adj]) cube([slit_len, slit_width, material_thickness+(2*adj)]);
+
+        // pcb folding slits left
+        translate([0, slit_offset, -adj]) cube([slit_width, slit_len, material_thickness+(2*adj)]);
+        translate([0, pcb_depth/2-slit_len/2, -adj]) cube([slit_width, slit_len, material_thickness+(2*adj)]);
+        translate([0, pcb_depth-slit_offset-slit_len, -adj]) cube([slit_width, slit_len, material_thickness+(2*adj)]);
+
+        // pcb folding slits front
+        translate([slit_offset, pcb_depth-slit_width, -adj]) cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width/2-slit_len/2, pcb_depth-slit_width, -adj]) cube([slit_len, slit_width, material_thickness+(2*adj)]);
+        translate([pcb_width-slit_offset-slit_len, pcb_depth-slit_width, -adj]) cube([slit_len, slit_width, material_thickness+(2*adj)]);
+
+        // pcb folding slits right
+        translate([pcb_width-slit_width, slit_offset, -adj]) cube([slit_width, slit_len, material_thickness+(2*adj)]);
+        translate([pcb_width-slit_width, pcb_depth/2-slit_len/2, -adj]) cube([slit_width, slit_len, material_thickness+(2*adj)]);
+        translate([pcb_width-slit_width, pcb_depth-slit_offset-slit_len, -adj]) cube([slit_width, slit_len, material_thickness+(2*adj)]);
+    }
+}

mod/case_side.scad

@@ -0,0 +1,303 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: case_side
+    DESCRIPTION: creates case side for supported designs and styles
+           TODO: none
+
+          USAGE: case_side(case_design, side)
+
+*/
+
+module case_side(case_design, side) {
+    
+    difference() {
+        union() {
+            if(case_design == "panel") {
+                if(side == "rear") {
+                    difference() {
+                        union() {
+                            translate([-gap,-wallthick-gap,-floorthick]) 
+                                cube([width-2*wallthick,wallthick,case_z+2*floorthick]);
+                            // right hook
+                            difference() {
+                                translate([width-(2*wallthick)-gap-adj,-wallthick-gap,
+                                    ((case_z)/2)-4]) 
+                                        cube([(2*wallthick)+.5,wallthick,8]);
+                                translate([width-(2*wallthick)-gap-adj,-wallthick-gap-adj,
+                                    ((case_z)/2)-4-adj]) 
+                                        cube([wallthick+.25,wallthick+(2*adj),4.25]);
+                            }
+                            // left hook
+                            difference() {
+                                translate([-(2*wallthick)-gap-adj-.25,-wallthick-gap,
+                                    ((case_z)/2)-4]) 
+                                        cube([(2*wallthick)+.5,wallthick,8]);
+                                translate([-wallthick-gap-adj-.25,-wallthick-gap-adj,
+                                    ((case_z)/2)-4-adj]) 
+                                        cube([wallthick+.25,wallthick+(2*adj),4.25]);
+                            }
+                        }
+                        // top slots
+                        translate([(width*(1/5))-8.25-(wallthick+gap),-wallthick-gap-adj,
+                            case_z-floorthick-.25]) 
+                                cube([8.5,wallthick+2*adj,floorthick+.5]);
+                        translate([width-(width*(1/5))-(wallthick+gap)-.25,-wallthick-gap-adj,
+                            case_z-floorthick-.25]) 
+                                cube([8.5,wallthick+2*adj,floorthick+.5]);
+                        // bottom slots
+                        translate([(width*(1/5))-8.25-(wallthick+gap),-wallthick-gap-adj,-.25]) 
+                                cube([8.5,wallthick+2*adj,floorthick+.5]);
+                        translate([width-(width*(1/5))-(wallthick+gap)-.25,-wallthick-gap-adj,-.25]) 
+                                cube([8.5,wallthick+2*adj,floorthick+.5]);
+                    }
+                }
+                if(side == "front") {
+                    difference() {
+                        union() {
+                            translate([-gap,depth-2*(wallthick)-gap,-floorthick]) 
+                                cube([width-2*wallthick,wallthick,case_z+2*floorthick]);
+                            // right hook
+                            difference() {
+                                translate([width-(2*wallthick)-gap-adj,depth-2*(wallthick)-gap-adj,
+                                    ((case_z)/2)-4])
+                                        cube([(2*wallthick)+.5,wallthick,8]);
+                                translate([width-(2*wallthick)-gap-adj,
+                                    depth-2*(wallthick)-adj-gap-adj,((case_z)/2)-4-adj])
+                                        cube([wallthick+.25,wallthick+(2*adj),4.25]);
+                            }
+                            // left hook
+                            difference() {
+                                translate([-(2*wallthick)-gap-adj-.25,depth-2*(wallthick)-gap-adj,(
+                                    (case_z)/2)-4]) 
+                                        cube([(2*wallthick)+.5,wallthick,8]);
+                                translate([-wallthick-gap-adj-.25,depth-2*(wallthick)-adj-gap-adj,
+                                    ((case_z)/2)-4-adj]) 
+                                        cube([wallthick+.25,wallthick+(2*adj),4.25]);
+                            }
+                        }
+                        // top slots
+                        translate([(width*(1/5))-8.25-(wallthick+gap),depth-2*wallthick-gap-adj,
+                            case_z-floorthick-.25]) 
+                                cube([8.5,wallthick+2*adj,floorthick+.5]);
+                        translate([width-(width*(1/5))-(wallthick+gap)-.25,depth-2*wallthick-gap-adj,
+                            case_z-floorthick-.25]) 
+                                cube([8.5,wallthick+2*adj,floorthick+.5]);
+                        // bottom slots
+                        translate([(width*(1/5))-8.25-(wallthick+gap),depth-2*wallthick-gap-adj,-.25]) 
+                                cube([8.5,wallthick+2*adj,floorthick+.5]);
+                        translate([width-(width*(1/5))-(wallthick+gap)-.25,
+                            depth-2*wallthick-gap-adj,-.25]) cube([8.5,wallthick+2*adj,floorthick+.5]);
+                    }
+                }
+                if(side == "right") {
+                    difference() {
+                        translate([width-(2*wallthick)-gap,-(2*wallthick)-gap,-wallthick]) 
+                            cube([wallthick,depth+2*wallthick,case_z+(2*wallthick)]);
+                        translate([width-(2*wallthick)-gap-adj,-wallthick-gap-.25,
+                            ((case_z)/2)]) cube([wallthick+2*adj,wallthick+.5,8.5]);
+                        translate([width-(2*wallthick)-gap-adj,depth-2*(wallthick)-gap-.25,
+                            ((case_z)/2)])
+                                cube([wallthick+2*adj,wallthick+.5,8.5]);
+                    }
+                }
+                if(side == "left") {
+                    difference() {
+                        translate([-wallthick-gap,-(2*wallthick)-gap,-wallthick]) 
+                            cube([wallthick,depth+2*wallthick,case_z+(2*wallthick)]);
+                        translate([-wallthick-gap-adj,-wallthick-gap-.25,((case_z)/2)])
+                            cube([wallthick+2*adj,wallthick+.5,8.5]);
+                        translate([-wallthick-gap-adj,depth-2*(wallthick)-gap-.25,
+                            ((case_z)/2)])
+                                cube([wallthick+2*adj,wallthick+.5,8.5]);
+                    }
+                }
+            }
+            if(case_design == "tray_sides") {
+                if(side == "right") {
+                    difference() {
+                        union() {
+                            translate([width-wallthick-gap,-(2*wallthick)-gap,0]) 
+                                cube([sidethick,depth+2*wallthick,case_z+(2*wallthick)]);
+                            translate([width-gap-wallthick-1+adj,depth-2*(wallthick+gap)-.5,case_z+(2*wallthick)-2]) 
+                                cube([1,6,2]);
+                            translate([width-gap-wallthick-1+adj,-2*(wallthick+gap)+1.5,case_z+(2*wallthick)-2]) 
+                                cube([1,6,2]);
+                            // top rail
+                            translate([width-6.9-adj,-gap,case_z-floorthick-.5])
+                                cube([4,depth-2*(wallthick+gap),2]);
+                        }
+                        // right side bottom attachment holes          
+                        translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+10,
+                            ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                        if(depth >= 75) {                        
+                            translate([width-2*(wallthick+gap)-sidethick-adj,depth-wallthick-gap-10,
+                                ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) 
+                                    cylinder(d=3, h=10+sidethick+(2*adj));
+                        }
+                        else {
+                            translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+40,
+                                ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) 
+                                    cylinder(d=3, h=10+sidethick+(2*adj));
+                        }
+                    }
+                }
+                if(side == "left") {
+                    difference() {
+                        union() {
+                            translate([-wallthick-gap-sidethick,-(2*wallthick)-gap,0]) 
+                                cube([sidethick,depth+2*wallthick,case_z+(2*wallthick)]);
+                            translate([-gap-wallthick-adj,depth-2*(wallthick+gap)-.5,case_z+(2*wallthick)-2])
+                                cube([1,6,2]);
+                            translate([-gap-wallthick-adj,-2*(wallthick+gap)+1.5,case_z+(2*wallthick)-2]) 
+                                cube([1,6,2]);
+                            // top rail
+                            translate([-wallthick-gap-adj,-gap,case_z-floorthick-.5]) 
+                                cube([4,depth-2*(wallthick+gap),2]);
+                        }
+                        // left side bottom attachment holes
+                        translate([-wallthick-gap-adj-5,wallthick+gap+10,
+                            ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                        if(depth >= 75) {
+                            translate([-wallthick-gap-adj-6,depth-wallthick-gap-10,
+                                ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) 
+                                    cylinder(d=3, h=10+sidethick+(2*adj));
+                        }
+                        else {
+                            translate([-wallthick-gap-adj-6,wallthick+gap+40,
+                                ((bottom_height+floorthick)/2)-1]) rotate([0,90,0]) 
+                                    cylinder(d=3, h=10+sidethick+(2*adj));
+                        }
+                    }
+                }
+            }
+            if(case_design == "tray_vu5") {
+                cheight = case_z+90;
+                vesa = 75;
+                vu_holder("vu5",side,vesa,cheight);
+            }
+            if(case_design == "tray_vu7") {
+                cheight = case_z+122;
+                vesa = 100;
+                vu_holder("vu7",side,vesa,cheight);
+            }         
+            // additive accessories
+            if(accessory_name != "none") {
+                for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                    class = accessory_data[a[0]][i];
+                    type = accessory_data[a[0]][i+1];
+                    loc_x = accessory_data[a[0]][i+2];
+                    loc_y = accessory_data[a[0]][i+3];
+                    loc_z = accessory_data[a[0]][i+4];
+                    face = accessory_data[a[0]][i+5];
+                    rotation = accessory_data[a[0]][i+6];
+                    parametric = accessory_data[a[0]][i+7];
+                    size = accessory_data[a[0]][i+8];
+                    data = accessory_data[a[0]][i+9];
+                    mask = accessory_data[a[0]][i+10];
+                    
+                    if (class == "add1" && face == side) {
+                        parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,size,data,[false,mask[1],mask[2],mask[3]]);
+                    }
+                }
+            }
+        }
+        // subtractive accessories
+        if(accessory_name != "none") {
+            for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                class = accessory_data[a[0]][i];
+                type = accessory_data[a[0]][i+1];
+                loc_x = accessory_data[a[0]][i+2];
+                loc_y = accessory_data[a[0]][i+3];
+                loc_z = accessory_data[a[0]][i+4];
+                face = accessory_data[a[0]][i+5];
+                rotation = accessory_data[a[0]][i+6];
+                parametric = accessory_data[a[0]][i+7];
+                size_x = accessory_data[a[0]][i+8][0];
+                size_y = accessory_data[a[0]][i+8][1];
+                size_z = accessory_data[a[0]][i+8][2];
+                data = accessory_data[a[0]][i+9];
+                mask = accessory_data[a[0]][i+10];
+                
+                if ((class == "sub" && face == side) || class == "suball") {
+                    if(accessory_highlight == false) {
+                        parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,parametric,
+                            [size_x,size_y,size_z],data,mask);
+                    }
+                    else {
+                        #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,parametric,
+                            [size_x,size_y,size_z],data,mask);
+                    }
+                }
+                // create openings for additive 
+                if((class == "add1" || class == "add2" || class == "model") && mask[0] == true) {
+                    if(accessory_highlight == false) {
+                            parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,mask);
+                    }
+                    else {
+                            #parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,mask);
+                    }
+                }
+            }
+        }
+        // sbc openings
+        if(sbc_highlight == true) {
+            #translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj-adj]) 
+                sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        }
+        else {
+            translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj-adj]) 
+                sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        }
+        // indents
+        if(indents == true) {
+
+            for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                class = sbc_data[s[0]][i+1];
+                type = sbc_data[s[0]][i+2];
+                id = sbc_data[s[0]][i+3];
+                loc_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                loc_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                loc_z = sbc_data[s[0]][i+6]+pcb_loc_z;
+                side = sbc_data[s[0]][i+7];
+                rotation = sbc_data[s[0]][i+8];
+
+                indent(loc_x, loc_y, bottom_height+pcb_loc_z-adj, rotation[2], side, class, type, wallthick, gap, floorthick, pcb_z);
+            }   
+        }
+    }
+    if(accessory_name != "none") {
+        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+            class = accessory_data[a[0]][i];
+            type = accessory_data[a[0]][i+1];
+            loc_x = accessory_data[a[0]][i+2];
+            loc_y = accessory_data[a[0]][i+3];
+            loc_z = accessory_data[a[0]][i+4];
+            face = accessory_data[a[0]][i+5];
+            rotation = accessory_data[a[0]][i+6];
+            parametric = accessory_data[a[0]][i+7];
+            size = accessory_data[a[0]][i+8];
+            data = accessory_data[a[0]][i+9];
+            mask = accessory_data[a[0]][i+10];
+            
+            if (class == "add2" && face == side) {
+                parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,size,data,[false,mask[1],mask[2],mask[3]]);
+            }
+        }
+    }
+}

mod/case_top.scad

@@ -0,0 +1,660 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: case_top
+    DESCRIPTION: creates case top for supported designs
+           TODO: none
+
+          USAGE: case_top(case_design)
+
+*/
+
+module case_top(case_design) {
+
+    lip = 5;
+    vu_rotation = [15,0,0];
+    case_fn = 360;     // circle segments for round cases
+    case_ffn = 90;     // circle segments for fillet of round cases
+    adj = .01;
+
+    difference() {
+        union() {
+            difference() {
+                union() {
+                    if(case_design == "shell") {
+                        difference() {
+                            translate([(width/2)-wallthick-gap,
+                                (depth/2)-wallthick-gap,bottom_height+(top_height/2)]) 
+                                    cube_fillet_inside([width,depth,top_height], 
+                                        vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                            top=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], 
+                                                bottom=[0,0,0,0], $fn=90);
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,
+                                bottom_height+(top_height/2)-floorthick]) 
+                                    cube_fillet_inside([width-(wallthick*2),depth-(wallthick*2),top_height], 
+                                        vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],
+                                            top=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet],
+                                                bottom=[0,0,0,0], $fn=90);
+                        }
+                    }
+                    if(case_design == "panel") {
+                        union() {
+                           translate([-gap,-gap,case_z-floorthick]) 
+                                cube([width-(2*wallthick),depth-(2*wallthick),floorthick]);
+                            translate([(width*(1/5))-8-(wallthick+gap),depth-(2*wallthick)-gap-adj,
+                                case_z-floorthick]) 
+                                    cube([8,wallthick+2*adj,floorthick]);
+                            translate([width-(width*(1/5))-(wallthick+gap),depth-(2*wallthick)-gap-adj,
+                                case_z-floorthick]) 
+                                    cube([8,wallthick+2*adj,floorthick]);
+                            translate([(width*(1/5))-8-(wallthick+gap),-wallthick-gap+adj,
+                                case_z-floorthick]) 
+                                    cube([8,wallthick+2*adj,floorthick]);
+                            translate([width-(width*(1/5))-(wallthick+gap),-wallthick-gap+adj,
+                                case_z-floorthick]) 
+                                    cube([8,wallthick+2*adj,floorthick]);
+                        }
+                    }
+                    if(case_design == "stacked") {
+                        translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,
+                            case_z-(floorthick/2)]) 
+                             cube_fillet_inside([width-(2*wallthick),depth-(2*wallthick),floorthick], 
+                                 vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                     top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+                        }
+                    if(case_design == "tray_vu5" || case_design == "tray_vu7" || case_design == "tray_sides") {
+                        translate([-wallthick-gap+.5,-wallthick-gap,case_z])
+                            cube([width-1,depth,floorthick]);
+                        translate([-wallthick-gap+.5,-wallthick-gap,
+                            case_z-floorthick+adj]) cube([width-1,wallthick,wallthick]);
+                    }
+                    if(case_design == "tray") {
+                        difference() {
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z/2]) 
+                                cube_fillet_inside([width+2*wallthick+1,depth,case_z], 
+                                    vertical=[0,0,0,0], top=[0,edge_fillet,0,edge_fillet,edge_fillet], 
+                                        bottom=[0,0,0,0], $fn=90);
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,(case_z/2)-floorthick+.25]) 
+                                cube_fillet_inside([width+1,depth+(wallthick*2),case_z], 
+                                    vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],
+                                        top=[0,0,0,0],bottom=[0,0,0,0], $fn=90);
+                            for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                                class = sbc_data[s[0]][i+1];
+                                type = sbc_data[s[0]][i+2];
+                                id = sbc_data[s[0]][i+3];
+                                pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                                pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                                pcbhole_z = sbc_data[s[0]][i+6];
+                                pcbhole_size = sbc_data[s[0]][i+9][0];
+                                pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                                if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_rear") {
+                                    if((pcbhole_y <= 10 && pcbhole_x <= 10) || (ext_top_standoffs == true && ext_top_rear_left_enable == true)) {
+                                        translate([-wallthick-gap-adj-6,wallthick+gap+10,floorthick+3.4]) rotate([0,90,0]) 
+                                            cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                    else {
+                                        translate([-wallthick-gap-adj-6,wallthick+gap+2,floorthick+3.4]) rotate([0,90,0]) 
+                                            cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                }
+                                if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_front") {
+                                    if((pcbhole_y >= pcb_depth+case_offset_y-10 && pcbhole_x <= 10) || (ext_top_standoffs == true && ext_top_front_left_enable == true)) {
+                                        translate([-wallthick-gap-adj-6,wallthick-gap+pcb_depth+case_offset_y-14,
+                                            floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                    else {
+                                        translate([-wallthick-gap-adj-6,wallthick+gap+pcb_depth+case_offset_y-8,
+                                            floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                }
+                                if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_rear") {
+                                    if((pcbhole_y <= 10 && pcbhole_x >= pcb_width-10) || (ext_top_standoffs == true && ext_top_rear_right_enable == true)) {
+                                        translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+10,floorthick+3.4]) 
+                                            rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                    else {
+                                        translate([width-2*(wallthick+gap)-sidethick-adj,wallthick+gap+2,floorthick+3.4]) 
+                                            rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                }
+                                if(class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_front") {
+                                    if((pcbhole_y >= pcb_depth+case_offset_y-10 && pcbhole_x >= width-10) || (ext_bottom_standoffs == true && ext_bottom_front_right_enable == true)) {
+                                        translate([width-3*(wallthick+gap)-adj,wallthick-gap+pcb_depth+case_offset_y-14,
+                                            floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                    else {
+                                        translate([width-3*(wallthick+gap)-adj,wallthick-gap+pcb_depth+case_offset_y-8,
+                                            floorthick+3.4]) rotate([0,90,0]) cylinder(d=3, h=10+sidethick+(2*adj));
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    if(case_design == "round") {
+                        difference() {
+                            translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-lip/2]) rotate([0,0,30]) 
+                                cylinder_fillet_inside(h=top_height+lip, r=case_diameter/2, 
+                                    top=edge_fillet, bottom=0, $fn=case_fn, fillet_fn=case_ffn, center=true);
+                            translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-floorthick-lip/2]) rotate([0,0,30]) 
+                                cylinder_fillet_inside(h=top_height+lip, r=(case_diameter/2)-wallthick, 
+                                    top=edge_fillet-1, bottom=0, $fn=case_fn, fillet_fn=case_ffn, center=true);
+                            translate([pcb_width/2,pcb_depth/2,bottom_height-adj-lip/2]) rotate([0,0,30]) 
+                                cylinder_fillet_inside(h=lip+2*adj, r=(case_diameter/2)-wallthick/2+tol/2, 
+                                    top=edge_fillet-1, bottom=0, $fn=case_fn, fillet_fn=case_ffn, center=true);
+                            // io cutout
+                            if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
+                                sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
+                                    sbc_model != "rpizero" && sbc_model != "rpizero2w") {
+                                translate([width,(depth/2)-wallthick-gap,bottom_height-lip+top_height/2-floorthick])
+                                    cube_fillet_inside([18,depth-2*(wallthick+gap)-1,top_height+lip+2], 
+                                        vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+                            }
+                            else {
+                                translate([(width/2)-wallthick-gap,-20,bottom_height-lip+top_height/2-floorthick])
+                                    cube_fillet_inside([width-2*(wallthick+gap)-1,40,top_height+lip+2], 
+                                        vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+                            }
+                        }
+                        if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
+                            sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
+                                sbc_model != "rpizero" && sbc_model != "rpizero2w") {
+                            translate([width-2*wallthick-gap-.95,depth/2-wallthick-gap-(depth-2*(floorthick+gap))/2,
+                                bottom_height]) cube([wallthick-adj,depth-2*(floorthick+gap),top_height+adj]);
+                        }
+                        else {
+                            translate([-.95,depth/2-2*wallthick-gap-(depth-2*(floorthick+gap))/2,
+                                bottom_height]) cube([width-2*(floorthick+gap),wallthick-adj,top_height+adj]);
+                        }
+                    }
+                    if(case_design == "hex") {
+                        if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
+                            sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" && 
+                                sbc_model != "rpizero" && sbc_model != "rpizero2w") {
+                            difference() {
+                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-lip/2]) rotate([0,0,30]) 
+                                    cylinder_fillet_inside(h=top_height+lip, r=case_diameter/2, 
+                                        top=edge_fillet, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
+                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-floorthick-lip/2]) rotate([0,0,30]) 
+                                    cylinder_fillet_inside(h=top_height+lip, r=(case_diameter/2)-wallthick, 
+                                        top=edge_fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
+                                translate([pcb_width/2,pcb_depth/2,bottom_height-adj-lip/2]) rotate([0,0,30]) 
+                                    cylinder_fillet_inside(h=lip+2*adj, r=(case_diameter/2)-wallthick/2+tol/2, 
+                                        top=edge_fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
+                            // io cutout
+                            translate([width,(depth/2)-wallthick-gap,bottom_height-lip+top_height/2-floorthick])
+                                cube_fillet_inside([18,depth-2*(wallthick+gap)-1,top_height+lip+2], 
+                                    vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+                            }
+                        }
+                        else {
+                            difference() {
+                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-lip/2]) rotate([0,0,0]) 
+                                    cylinder_fillet_inside(h=top_height+lip, r=hex_diameter/2, 
+                                        top=edge_fillet, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
+                                translate([pcb_width/2,pcb_depth/2,bottom_height+(top_height/2)-floorthick-lip/2])
+                                    rotate([0,0,0]) cylinder_fillet_inside(h=top_height+lip, r=(hex_diameter/2)-wallthick, 
+                                        top=edge_fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
+                                translate([pcb_width/2,pcb_depth/2,bottom_height-adj-lip/2]) rotate([0,0,0]) 
+                                    cylinder_fillet_inside(h=lip+2*adj, r=(hex_diameter/2)-wallthick/2+tol/2, 
+                                        top=edge_fillet-1, bottom=0, $fn=6, fillet_fn=case_ffn, center=true);
+                                // io cutout
+                                translate([(width/2)-wallthick-gap,-23,bottom_height-lip+top_height/2-floorthick])
+                                    cube_fillet_inside([width-2*(wallthick+gap),40,top_height+lip+2], 
+                                        vertical=[0,0,0,0], top=[0,0,0,0], bottom=[0,0,0,0], $fn=90);
+                            }
+                        }
+                        if(width/depth >= 1.4 && sbc_model != "vim1" && sbc_model != "vim2" && 
+                            sbc_model != "vim3l" && sbc_model != "vim3" && sbc_model != "vim4" &&
+                                sbc_model != "rpizero" && sbc_model != "rpizero2w") {
+                            translate([width-2*wallthick-gap-.95,depth/2-wallthick-gap-(depth-2*(floorthick+gap))/2,
+                                bottom_height]) cube([wallthick-adj,depth-2*(floorthick+gap),top_height+adj]);
+                        }
+                        else {
+                            translate([0,depth/2-2.25*(wallthick+gap)-(depth-2*(floorthick+gap))/2,
+                                bottom_height]) cube([width-2*(floorthick+gap),wallthick-adj,top_height+adj]);
+                        }
+                    }
+                    if(case_design == "snap") {
+                        translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,floorthick*1.5+case_z])
+                            cube_fillet_inside([width,depth,floorthick], 
+                                vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                    top=[0,0,0,0],bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                        difference() {
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-adj]) 
+                                cube_fillet_inside([width-2*wallthick-tol,depth-2*wallthick-tol,2*floorthick+1.5], 
+                                    vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                        top=[0,0,0,0],bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                            
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-adj]) 
+                                cube_fillet_inside([width-(3*wallthick),depth-(3*wallthick),2*floorthick+1.5+adj], 
+                                    vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],top=[0,0,0,0],
+                                        bottom=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], $fn=90);
+                        }
+                        // snap top outdent
+                        difference() {
+                            translate([-wallthick-gap+1.25+tol,(depth/2)-((depth*.75)/2)+2.5-gap-wallthick,case_z-.5]) 
+                                rotate([0,45,0]) cube([4,(depth*.75)-5,4]);
+                            translate([-wallthick-gap+3,(depth/2)-((depth*.75)/2)+1.25-gap-wallthick,case_z+floorthick-5.75]) 
+                                rotate([0,0,0]) cube([6,(depth*.75)-2,6]);
+                        }
+                        difference() {
+                            translate([width-wallthick-gap-6.8-tol,(depth/2)-((depth*.75)/2)+2.5-gap-wallthick,case_z-.5])
+                                rotate([0,45,0]) cube([4,(depth*.75)-5,4]);
+                            translate([width-wallthick-gap-8.5,(depth/2)-((depth*.75)/2)+1.25-gap-wallthick,case_z+floorthick-5.75])
+                                rotate([0,0,0]) cube([6,(depth*.75)-2,6]);
+                        }
+                    }
+                    if(case_design == "fitted") {
+                        difference() {
+                            translate([(width/2)-wallthick-gap,
+                                (depth/2)-wallthick-gap,case_z+floorthick/2-(lip)/2]) 
+                                    cube_fillet_inside([width,depth,lip+floorthick], 
+                                        vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                                            top=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], 
+                                                bottom=[0,0,0,0], $fn=90);
+                            translate([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,case_z-floorthick-1]) 
+                                    cube_fillet_inside([width-wallthick+tol,depth-wallthick+tol,lip+floorthick], 
+                                        vertical=[corner_fillet-1,corner_fillet-1,corner_fillet-1,corner_fillet-1],
+                                            top=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet],
+                                                bottom=[0,0,0,0], $fn=90);
+                        }
+                    }
+                    if(accessory_name != "none") {
+                        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                            class = accessory_data[a[0]][i];
+                            type = accessory_data[a[0]][i+1];
+                            loc_x = accessory_data[a[0]][i+2];
+                            loc_y = accessory_data[a[0]][i+3];
+                            loc_z = accessory_data[a[0]][i+4];
+                            face = accessory_data[a[0]][i+5];
+                            rotation = accessory_data[a[0]][i+6];
+                            parametric = accessory_data[a[0]][i+7];
+                            size = accessory_data[a[0]][i+8];
+                            data = accessory_data[a[0]][i+9];
+                            mask = accessory_data[a[0]][i+10];
+                            
+                            if (class == "add1" && face == "top") {
+                                parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,size,data,[false,mask[1],mask[2],mask[3]]);
+                            }
+                        }
+                    }
+                }
+                // pcb standoff holes
+                if(sbc_top_standoffs == true) {
+                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                        class = sbc_data[s[0]][i+1];
+                        type = sbc_data[s[0]][i+2];
+                        id = sbc_data[s[0]][i+3];
+                        pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                        pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                        pcbhole_z = sbc_data[s[0]][i+6];
+                        pcbhole_size = sbc_data[s[0]][i+9][0];
+                        pcbhole_pos = sbc_data[s[0]][i+10][4];
+
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_rear" && top_rear_left_enable == true && 
+                            top_standoff[6] != "blind") {
+                            translate([pcbhole_x,pcbhole_y,top_height+5]) cylinder(d=top_standoff[4]-.2, h=top_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "left_front" && top_front_left_enable == true &&
+                            top_standoff[6] != "blind") {
+                            translate([pcbhole_x,pcbhole_y,top_height+5]) cylinder(d=top_standoff[4]-.2, h=top_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_rear" && top_rear_right_enable == true && 
+                            top_standoff[6] != "blind") {
+                            translate([pcbhole_x,pcbhole_y,top_height+5]) cylinder(d=top_standoff[4]-.2, h=top_height);
+                        }
+                        if (class == "pcbhole" && id == pcb_id && pcbhole_pos == "right_front" && top_front_right_enable == true && 
+                            top_standoff[6] != "blind") {
+                            translate([pcbhole_x,pcbhole_y,top_height+5]) cylinder(d=top_standoff[4]-.2, h=top_height);
+                        }
+                    }
+                }
+                // extended standoff holes
+                if(ext_top_standoffs == true) {
+                    // right-rear standoff
+                    if((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 || pcb_loc_y >= 10) && 
+                            ext_top_rear_right_enable == true && ext_top_standoff[6] != "blind") {
+                        translate([width-ext_top_standoff_support_size/4-(2*(wallthick+gap))-(corner_fillet/2),
+                            (corner_fillet/2)+ext_top_standoff_support_size/4,top_height+5]) cylinder(d=ext_top_standoff[4]-.2, h=top_height);
+                    }
+                    // right-front standoff
+                    if(((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth >= 10) || 
+                        (width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth <= 10) ||
+                            (width-pcb_loc_x-pcb_width-(gap+2*wallthick) <= 10 && depth-pcb_loc_y-pcb_depth >= 10)) &&
+                                ext_top_front_right_enable == true && ext_top_standoff[6] != "blind") {
+                        translate([width-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),
+                            depth-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),top_height+5]) 
+                                cylinder(d=ext_top_standoff[4]-.2, h=top_height);
+                    }
+                    // left-rear standoff
+                    if((pcb_loc_x >= 10 || pcb_loc_y >= 10) && ext_top_rear_left_enable == true && ext_top_standoff[6] != "blind") {
+                        translate([(corner_fillet/2)+ext_top_standoff_support_size/4,
+                            (corner_fillet/2)+ext_top_standoff_support_size/4,top_height+5]) cylinder(d=ext_top_standoff[4]-.2, h=top_height);
+                    }
+                    // left-front standoff
+                    if(((pcb_loc_x >= 10 && (depth-(pcb_loc_y+pcb_depth)) >= 10) || 
+                        (pcb_loc_x <= 10 && (depth-(pcb_loc_y+pcb_depth)) >= 10) || 
+                            (pcb_loc_x >= 10 && (depth-(pcb_loc_y+pcb_depth)) <= 10)) &&
+                                ext_top_front_left_enable == true && ext_top_standoff[6] != "blind") {
+                        translate([+(corner_fillet/2)+ext_top_standoff_support_size/4,
+                            depth-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),top_height+5]) 
+                                cylinder(d=ext_top_standoff[4]-.2, h=top_height);
+                    }
+                }
+                // top cover pattern
+                if(top_cover_pattern != "solid") {
+                    if(top_cover_pattern == "hex_5mm") {
+                        translate([1,0,case_z-2]) vent_hex((width)/3.75,(depth)/6,floorthick+4,5,1.5,"horizontal");
+                    }
+                    if(top_cover_pattern == "hex_8mm") {
+                        translate([1,2,case_z-2]) vent_hex((width)/5.5,(depth)/9.5,floorthick+4,8,1.5,"horizontal");
+                    }
+                    if(top_cover_pattern == "linear_vertical") {
+                        translate([0,-gap,case_z-2]) vent(wallthick,depth-2*wallthick-gap,floorthick+4,1,1,(width-2*wallthick-gap)/4,"horizontal");
+                    }
+                    if(top_cover_pattern == "linear_horizontal") {
+                        translate([-gap,-gap,case_z-2]) vent(width-2*wallthick-gap,wallthick,floorthick+4,1,(depth-2*wallthick-gap)/3,1,"horizontal");
+                    }
+                    if(top_cover_pattern == "astroid") {
+                        for(c=[3:12:depth-8]) {
+                            for(r=[4:12:width-8]) {
+                                translate([r,c,case_z-4]) linear_extrude(floorthick+5) import("./dxf/astroid_8mm.dxf");
+                            }
+                        }   
+                    }
+                }
+                // rear io shield opening for standard form motherboards
+                if(rear_io_shield == true) {
+                    if(sbc_model == "mini-stx_thin") {
+                        translate([6.2+pcb_loc_x,-4.5,-4.15+bottom_height-pcb_z+pcb_loc_z]) cube([123.95, 10+pcb_loc_y, 25]);
+                    }
+                    if(sbc_model == "mini-stx") {
+                        translate([6.2+pcb_loc_x,-4.5,-4.15+bottom_height-pcb_z+pcb_loc_z]) cube([123.95, 10+pcb_loc_y, 40]);
+                    }
+                    if(sbc_model == "mini-itx_thin") {
+                        translate([-2.62+pcb_loc_x,-4.5,-1.75+bottom_height-pcb_z+pcb_loc_z]) cube([158.75, 10+pcb_loc_y, 25]);
+                    }
+                    if(sbc_model != "mini-stx_thin" && sbc_model != "mini-stx" && sbc_model != "mini-itx_thin") {
+                        translate([-2.62+pcb_loc_x,-4.5,-1.75+bottom_height-pcb_z+pcb_loc_z]) cube([158.75, 10+pcb_loc_y, 44]);
+                    }
+                }
+            }
+            // pcb standoffs
+            if(sbc_top_standoffs == true) {
+                    for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                        class = sbc_data[s[0]][i+1];
+                        type = sbc_data[s[0]][i+2];
+                        id = sbc_data[s[0]][i+3];
+                        pcbhole_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                        pcbhole_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                        pcbhole_z = sbc_data[s[0]][i+6];
+                        pcbhole_size = sbc_data[s[0]][i+9][0];
+                        pcbhole_pos = sbc_data[s[0]][i+10][4];
+                    if(class == "pcbhole" && id == pcb_id && 
+                        (pcbhole_pos == "left_rear" || pcbhole_pos == "left_front" || pcbhole_pos == "right_rear" || pcbhole_pos == "right_front")) {
+                        if (pcbhole_pos == "left_rear" && top_rear_left_enable == true) {
+                            top_support = top_sidewall_support == true ? top_rear_left_support : "none";
+                            pcb_standoff = [top_standoff[0],
+                                                top_standoff[1],
+                                                top_height+top_rear_left_adjust-pcb_loc_z,
+                                                top_standoff[3],
+                                                top_standoff[4],
+                                                top_standoff[5],
+                                                top_standoff[6],
+                                                top_standoff[7],
+                                                top_support,
+                                                top_standoff[9],
+                                                top_standoff[10],
+                                                top_standoff[11],
+                                                top_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,case_z]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "left_front" && top_front_left_enable == true) {
+                            top_support = top_sidewall_support == true ? top_front_left_support : "none";
+                            pcb_standoff = [top_standoff[0],
+                                                top_standoff[1],
+                                                top_height+top_front_left_adjust-pcb_loc_z,
+                                                top_standoff[3],
+                                                top_standoff[4],
+                                                top_standoff[5],
+                                                top_standoff[6],
+                                                top_standoff[7],
+                                                top_support,
+                                                top_standoff[9],
+                                                top_standoff[10],
+                                                top_standoff[11],
+                                                top_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,case_z]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "right_rear" && top_rear_right_enable == true) {
+                            top_support = top_sidewall_support == true ? top_rear_right_support : "none";
+                            pcb_standoff = [top_standoff[0],
+                                                top_standoff[1],
+                                                top_height+top_rear_right_adjust-pcb_loc_z,
+                                                top_standoff[3],
+                                                top_standoff[4],
+                                                top_standoff[5],
+                                                top_standoff[6],
+                                                top_standoff[7],
+                                                top_support,
+                                                top_standoff[9],
+                                                top_standoff[10],
+                                                top_standoff[11],
+                                                top_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,case_z]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                        if (pcbhole_pos == "right_front" && top_front_right_enable == true) {
+                            top_support = top_sidewall_support == true ? top_front_right_support : "none";
+                            pcb_standoff = [top_standoff[0],
+                                                top_standoff[1],
+                                                top_height+top_front_right_adjust-pcb_loc_z,
+                                                top_standoff[3],
+                                                top_standoff[4],
+                                                top_standoff[5],
+                                                top_standoff[6],
+                                                top_standoff[7],
+                                                top_support,
+                                                top_standoff[9],
+                                                top_standoff[10],
+                                                top_standoff[11],
+                                                top_standoff[12]];
+                            translate([pcbhole_x,pcbhole_y,case_z]) standoff(pcb_standoff,[false,10,2,"default"]);
+                        }
+                    }
+                }
+            }
+            // extended standoffs
+            if(ext_top_standoffs == true) {
+                // extended right-rear standoff
+                if((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 || pcb_loc_y >= 10) && ext_top_rear_right_enable == true) {
+                    extended_standoff = [ext_top_standoff[0],
+                                        ext_top_standoff[1],
+                                        top_height+ext_top_rear_right_adjust,
+                                        ext_top_standoff[3],
+                                        ext_top_standoff[4],
+                                        ext_top_standoff[5],
+                                        ext_top_standoff[6],
+                                        ext_top_standoff[7],
+                                        ext_top_rear_right_support,
+                                        ext_top_standoff[9],
+                                        ext_top_standoff[10],
+                                        ext_top_standoff[11],
+                                        ext_top_standoff[12]];
+                    translate([width-ext_top_standoff_support_size/4-(2*(wallthick+gap))-(corner_fillet/2),
+                        (corner_fillet/2)+ext_top_standoff_support_size/4,case_z]) standoff(extended_standoff,[false,10,2,"default"]);
+                }
+                // extended right-front standoff    
+                if(((width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth >= 10) || 
+                    (width-pcb_loc_x-pcb_width-(gap+2*wallthick) >= 10 && depth-pcb_loc_y-pcb_depth <= 10) ||
+                        (width-pcb_loc_x-pcb_width-(gap+2*wallthick) <= 10 && depth-pcb_loc_y-pcb_depth >= 10)) &&
+                            ext_top_front_right_enable == true) {
+                    extended_standoff = [ext_top_standoff[0],
+                                        ext_top_standoff[1],
+                                        top_height+ext_top_front_right_adjust,
+                                        ext_top_standoff[3],
+                                        ext_top_standoff[4],
+                                        ext_top_standoff[5],
+                                        ext_top_standoff[6],
+                                        ext_top_standoff[7],
+                                        ext_top_front_right_support,
+                                        ext_top_standoff[9],
+                                        ext_top_standoff[10],
+                                        ext_top_standoff[11],
+                                        ext_top_standoff[12]];
+                        translate([width-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),
+                            depth-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)),case_z]) 
+                                standoff(extended_standoff,[false,10,2,"default"]);
+                }
+                // extended left-rear standoff
+                if((pcb_loc_x >= 10 || pcb_loc_y >= 10) && ext_top_rear_left_enable == true) {
+                            extended_standoff = [ext_top_standoff[0],
+                                        ext_top_standoff[1],
+                                        top_height+ext_top_rear_left_adjust,
+                                        ext_top_standoff[3],
+                                        ext_top_standoff[4],
+                                        ext_top_standoff[5],
+                                        ext_top_standoff[6],
+                                        ext_top_standoff[7],
+                                        ext_top_rear_left_support,
+                                        ext_top_standoff[9],
+                                        ext_top_standoff[10],
+                                        ext_top_standoff[11],
+                                        ext_top_standoff[12]];
+                    translate([(corner_fillet/2)+ext_top_standoff_support_size/4,
+                        (corner_fillet/2)+ext_top_standoff_support_size/4,case_z]) standoff(extended_standoff,[false,10,2,"default"]);
+                }
+                // extended left-front standoff
+                if(((pcb_loc_x >= 10 && (depth-(pcb_loc_y+pcb_depth)) >= 10) || 
+                        (pcb_loc_x <= 10 && (depth-(pcb_loc_y+pcb_depth)) >= 10) || 
+                            (pcb_loc_x >= 10 && depth-(pcb_loc_y+pcb_depth) <= 10)) &&
+                                ext_top_front_left_enable == true) {
+                    extended_standoff = [ext_top_standoff[0],
+                                        ext_top_standoff[1],
+                                        top_height+ext_top_front_left_adjust,
+                                        ext_top_standoff[3],
+                                        ext_top_standoff[4],
+                                        ext_top_standoff[5],
+                                        ext_top_standoff[6],
+                                        ext_top_standoff[7],
+                                        ext_top_front_left_support,
+                                        ext_top_standoff[9],
+                                        ext_top_standoff[10],
+                                        ext_top_standoff[11],
+                                        ext_top_standoff[12]];
+                    translate([(corner_fillet/2)+ext_top_standoff_support_size/4,
+                        depth-ext_top_standoff_support_size/4-(corner_fillet/2)-(2*(wallthick+gap)), case_z]) 
+                            standoff(extended_standoff,[false,10,2,"default"]);
+                }
+            }
+        }
+        // subtractive accessories
+        if(accessory_name != "none") {
+            for (i=[1:11:len(accessory_data[a[0]])-1]) {
+                class = accessory_data[a[0]][i];
+                type = accessory_data[a[0]][i+1];
+                loc_x = accessory_data[a[0]][i+2];
+                loc_y = accessory_data[a[0]][i+3];
+                loc_z = accessory_data[a[0]][i+4];
+                face = accessory_data[a[0]][i+5];
+                rotation = accessory_data[a[0]][i+6];
+                parametric = accessory_data[a[0]][i+7];
+                size_x = accessory_data[a[0]][i+8][0];
+                size_y = accessory_data[a[0]][i+8][1];
+                size_z = accessory_data[a[0]][i+8][2];
+                data = accessory_data[a[0]][i+9];
+                mask = accessory_data[a[0]][i+10];
+
+                if ((class == "sub" && face == "top") || class == "suball") {
+                    if(accessory_highlight == false) {
+                        parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,
+                            parametric,[size_x,size_y,size_z],data,mask);
+                    }
+                    else {
+                        #parametric_move_sub(type,loc_x,loc_y,loc_z,face,rotation,
+                            parametric,[size_x,size_y,size_z],data,mask);
+                    }
+                }
+
+                // create openings for additive 
+                if((class == "add1" || class == "add2" || class == "model") && mask[0] == true) {
+                    if(accessory_highlight == false) {
+                            parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,mask);
+                    }
+                    else {
+                            #parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,[size_x,size_y,size_z],data,mask);
+                    }
+                }
+            }
+        }
+        // sbc openings
+        if(sbc_highlight == true) {
+            #translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj]) 
+                sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        }
+        else {
+            translate([pcb_loc_x ,pcb_loc_y,bottom_height-pcb_z+pcb_loc_z-adj]) 
+                sbc(sbc_model, cooling, fan_size, gpio_opening, uart_opening, true);
+        }
+        // indents
+        if(indents == true) {
+
+            for (i=[1:11:len(sbc_data[s[0]])-2]) {
+                class = sbc_data[s[0]][i+1];
+                type = sbc_data[s[0]][i+2];
+                id = sbc_data[s[0]][i+3];
+                loc_x = sbc_data[s[0]][i+4]+pcb_loc_x;
+                loc_y = sbc_data[s[0]][i+5]+pcb_loc_y;
+                loc_z = sbc_data[s[0]][i+6]+pcb_loc_z;
+                side = sbc_data[s[0]][i+7];
+                rotation = sbc_data[s[0]][i+8];
+
+                indent(loc_x, loc_y, bottom_height+pcb_loc_z-adj, rotation[2], side, class, type, wallthick, gap, floorthick, pcb_z);
+            }   
+        }
+        // clean fillets
+        if(case_design == "shell") {
+            translate(([(width/2)-wallthick-gap,(depth/2)-wallthick-gap,
+                bottom_height+(top_height/2)]) ) 
+                    cube_negative_fillet([width,depth,top_height], radius=-1,
+                        vertical=[corner_fillet,corner_fillet,corner_fillet,corner_fillet], 
+                            top=[edge_fillet,edge_fillet,edge_fillet,edge_fillet,edge_fillet], 
+                                bottom=[0,0,0,0], $fn=90);
+        }
+    }
+    // additive accessories
+    if(accessory_name != "none") {
+        for (i=[1:11:len(accessory_data[a[0]])-1]) {
+            class = accessory_data[a[0]][i];
+            type = accessory_data[a[0]][i+1];
+            loc_x = accessory_data[a[0]][i+2];
+            loc_y = accessory_data[a[0]][i+3];
+            loc_z = accessory_data[a[0]][i+4];
+            face = accessory_data[a[0]][i+5];
+            rotation = accessory_data[a[0]][i+6];
+            parametric = accessory_data[a[0]][i+7];
+            size = accessory_data[a[0]][i+8];
+            data = accessory_data[a[0]][i+9];
+            mask = accessory_data[a[0]][i+10];
+            
+            if (class == "add2" && face == "top") {
+                parametric_move_add(type,loc_x,loc_y,loc_z,face,rotation,parametric,size,data,[false,mask[1],mask[2],mask[3]]);
+            }
+        }
+    }
+}

mod/indent.scad

@@ -0,0 +1,268 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: indent
+    DESCRIPTION: creates case IO indents
+           TODO: none
+
+          USAGE: indent(loc_x, loc_y, loc_z, rotation, side, class, type, wallthick, gap, floorthick, pcb_z)
+
+*/
+
+module indent(loc_x, loc_y, loc_z, rotation, side, class, type, wallthick, gap, floorthick, pcb_z) {
+    
+    adj = .01;
+    $fn=90;
+    
+    // hdmi indent
+    if(class == "video" && type == "hdmi_a" && side == "top" && rotation == 0) {
+        place(loc_x+2.375,-(wallthick+gap)+wallthick/2,loc_z+3.75,12,10,rotation,side) 
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_a" && side == "top" && rotation == 90) {
+        place(-gap-wallthick/2,loc_y,loc_z+3.75,12,10,rotation,side)
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_a" && side == "top" && rotation == 180) {
+        place(loc_x,depth-(wallthick+gap)-10-wallthick/2,loc_z+3.75,12,10,rotation,side)
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_a" && side == "top" && rotation == 270) {
+        place(width-(wallthick+gap)-10-wallthick/2,loc_y+2.375,loc_z+3.75,12,10,rotation,side)
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_a" && side == "bottom" && rotation == 0) {
+        place(loc_x,-(wallthick+gap)+wallthick/2,loc_z-pcb_z-3.75,12,10,rotation,side)
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_a" && side == "bottom" && rotation == 90) {
+        place(width-(wallthick+gap)-10-wallthick/2,loc_y,loc_z-5.25,12,10,rotation,side)
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_a" && side == "bottom" && rotation == 180) {
+        place(loc_x+2.375,depth-(wallthick+gap)-10-wallthick/2,loc_z-pcb_z-3.75,12,10,rotation,side)
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_a" && side == "bottom" && rotation == 270) {
+        place(-gap-wallthick/2,loc_y+1.75,loc_z-pcb_z-3.75,12,10,rotation,side)
+             rotate([90,0,0]) long_slot(12,10,wallthick);
+    }
+    // hdmi micro indent
+    if(class == "video" && type == "hdmi_micro" && rotation == 0 && side == "top") {
+        place(loc_x-.5,-(wallthick+gap)+wallthick/2,loc_z+1.5,6,8,rotation,side) 
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "video" && type == "hdmi_micro" && rotation == 90 && side == "top") {
+        place(-gap-wallthick/2,loc_y+1.5,loc_z+1.5,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "video" && type == "hdmi_micro" && rotation == 180 && side == "top") {
+        place(loc_x+1,depth-(wallthick+gap)-8-wallthick/2,loc_z+1.5,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "video" && type == "hdmi_micro" && rotation == 270 && side == "top") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y-.75,loc_z+1.5,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "video" && type == "hdmi_micro" && rotation == 0 && side == "bottom") {
+        place(loc_x+1.5,-(wallthick+gap)+wallthick/2,loc_z-3,6,8,rotation,side) 
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "video" && type == "hdmi_micro" && rotation == 90 && side == "bottom") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y+1.25,loc_z-3,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+
+    }
+    if(class == "video" && type == "hdmi_micro" && rotation == 180 && side == "bottom") {
+        place(loc_x-1,depth-(wallthick+gap)-8-wallthick/2,loc_z-3,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "video" && type == "hdmi_micro" && rotation == 270 && side == "bottom") {
+        place(-gap-wallthick/2,loc_y-.5,loc_z-3,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    // hdmi mini indent
+    if(class == "video" && type == "hdmi_mini" && rotation == 0 && side == "top") {
+        place(loc_x+.5,loc_y-gap-wallthick/2+1,loc_z+1.5,6,10,rotation,side) 
+            rotate([90,0,0]) long_slot(6,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_mini" && rotation == 90 && side == "top") {
+        place(loc_x-wallthick/2,loc_y+3.5,loc_z+1.5,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+
+    }
+    if(class == "video" && type == "hdmi_mini" && rotation == 180 && side == "top") {
+        place(loc_x+4.5,loc_y-wallthick/2,loc_z+1.5,6,10,rotation,side)
+            rotate([90,0,0]) long_slot(6,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_mini" && rotation == 270 && side == "top") {
+        place(loc_x+wallthick/2,loc_y+1.5,loc_z+1.5,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "video" && type == "hdmi_mini" && rotation == 0 && side == "bottom") {
+        place(loc_x+4.5,loc_y-gap-wallthick/2+1,loc_z-3,6,10,rotation,side) 
+            rotate([90,0,0]) long_slot(6,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_mini" && rotation == 90 && side == "bottom") {
+        place(loc_x+wallthick/2,loc_y+3.5,loc_z-3,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+
+    }
+    if(class == "video" && type == "hdmi_mini" && rotation == 180 && side == "bottom") {
+        place(loc_x+.5,loc_y-wallthick/2,loc_z-3,6,10,rotation,side)
+            rotate([90,0,0]) long_slot(6,10,wallthick);
+    }
+    if(class == "video" && type == "hdmi_mini" && rotation == 270 && side == "bottom") {
+        place(loc_x-wallthick/2,loc_y+1.5,loc_z-3,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    // power plug indent
+    if(class == "power" && type == "pwr5.5_7.5x11.5" && rotation == 0 && side == "top") {
+        place(loc_x+3.75,-(wallthick+gap)+wallthick/2,loc_z+6.25,10,10,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "power" && type == "pwr5.5_7.5x11.5" && rotation == 90 && side == "top") {
+        place(-gap-wallthick/2,loc_y-6.25,loc_z+6.25,10,10,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "power" && type == "pwr5.5_7.5x11.5" && rotation == 180 && side == "top") {
+        place(loc_x-6.5,depth-10-(wallthick+gap)-wallthick/2,loc_z+6.25,10,10,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "power" && type == "pwr5.5_7.5x11.5" && rotation == 270 && side == "top") {
+        place(width-(wallthick+gap)-10-wallthick/2,loc_y+3.75,loc_z+6.25,10,10,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "power" && type == "pwr2.5_5x7.5" && rotation == 0 && side == "top") {
+        place(loc_x+2.75,-(wallthick+gap)+wallthick/2,loc_z+2.1,7,7,rotation,side) 
+            rotate([90,0,0]) cylinder(d=7, h=wallthick);
+    }
+    if(class == "power" && type == "pwr2.5_5x7.5" && rotation == 90 && side == "top") {
+        place(-(wallthick+gap)+wallthick/2,loc_y-4.5,loc_z+2,7,7,rotation,side) 
+            rotate([90,0,0]) cylinder(d=7, h=wallthick);
+    }
+    if(class == "power" && type == "pwr2.5_5x7.5" && rotation == 180 && side == "top") {
+        place(loc_x-4.5,depth-(wallthick+gap)-7-wallthick/2,loc_z+2,7,7,rotation,side) 
+            rotate([90,0,0]) cylinder(d=7, h=wallthick);
+    }
+    if(class == "power" && type == "pwr2.5_5x7.5" && rotation == 270 && side == "top") {
+        place(width-(wallthick+gap)-7-wallthick/2,loc_y+2.5,loc_z+2,7,7,rotation,side) 
+            rotate([90,0,0]) cylinder(d=7, h=wallthick);
+    }
+    // micro usb indent
+    if(class == "usb2" && type == "micro" && rotation == 0 && side == "top") {
+        place(loc_x-.5,-(wallthick+gap)+wallthick/2,loc_z+1.9,6,8,rotation,side) 
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usb2" && type == "micro" && rotation == 90 && side == "top") {
+        place(-gap-wallthick/2,loc_y+1.5,loc_z+1.9,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+
+    }
+    if(class == "usb2" && type == "micro" && rotation == 180 && side == "top") {
+        place(loc_x+1.5,depth-(wallthick+gap)-8-wallthick/2,loc_z+1.9,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usb2" && type == "micro" && rotation == 270 && side == "top") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y-.5,loc_z+1.9,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usb2" && type == "micro" && rotation == 0 && side == "bottom") {
+        place(loc_x+1.5,-(wallthick+gap)+wallthick/2,loc_z-3.25,6,8,rotation,side) 
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usb2" && type == "micro" && rotation == 90 && side == "bottom") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y+1.5,loc_z-3.25,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+
+    }
+    if(class == "usb2" && type == "micro" && rotation == 180 && side == "bottom") {
+        place(loc_x-.5,depth-(wallthick+gap)-8-wallthick/2,loc_z-3.25,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usb2" && type == "micro" && rotation == 270 && side == "bottom") {
+        place(-gap-wallthick/2,loc_y-.5,loc_z-3.25,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    // single horizontal usbc indent
+    if(class == "usbc" && type == "single_horizontal" && rotation == 0 && side == "top") {
+        place(loc_x+.5,-(wallthick+gap)+wallthick/2,loc_z+1.75,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usbc" && type == "single_horizontal" && rotation == 90 && side == "top") {
+        place(-gap-wallthick/2,loc_y+2.5,loc_z+1.75,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usbc" && type == "single_horizontal" && rotation == 180 && side == "top") {
+        place(loc_x+2.5,depth-(wallthick+gap)-8-wallthick/2,loc_z+2,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usbc" && type == "single_horizontal" && rotation == 270 && side == "top") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y+.5,loc_z+1.75,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usbc" && type == "single_horizontal" && rotation == 0 && side == "bottom") {
+        place(loc_x+2.75,-(wallthick+gap)+wallthick/2,loc_z-3.25,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usbc" && type == "single_horizontal" && rotation == 90 && side == "bottom") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y+2.5,loc_z-3.25,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick-(wallthick+gap)+wallthick/2);
+    }
+    if(class == "usbc" && type == "single_horizontal" && rotation == 180 && side == "bottom") {
+        place(loc_x+.5,depth-(wallthick+gap)-8-wallthick/2,loc_z-3.25,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    if(class == "usbc" && type == "single_horizontal" && rotation == 270 && side == "bottom") {
+        place(-gap-wallthick/2,loc_y+.5,loc_z-3.25,6,8,rotation,side)
+            rotate([90,0,0]) long_slot(6,8,wallthick);
+    }
+    // audio jack indent
+    if(class == "audio" && type == "jack_3.5" && rotation == 0 && side == "top") {
+        place(loc_x+3.15,-(wallthick+gap)+wallthick/2,loc_z+2,8,8,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "audio" && type == "jack_3.5" && rotation == 90 && side == "top") {
+        place(-gap-wallthick/2,loc_y-4.6,loc_z+2,8,8,rotation,side)
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "audio" && type == "jack_3.5" && rotation == 180 && side == "top") {
+        place(loc_x-4.6,depth-(wallthick+gap)-8-wallthick/2,loc_z+2,8,8,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "audio" && type == "jack_3.5" && rotation == 270 && side == "top") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y+3.15,loc_z+2,8,8,rotation,side)
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "audio" && type == "jack_3.5" && rotation == 0 && side == "bottom") {
+        place(loc_x-4.6,-(wallthick+gap)+wallthick/2,loc_z-3.5,8,8,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "audio" && type == "jack_3.5" && rotation == 90 && side == "bottom") {
+        place(width-(wallthick+gap)-8-wallthick/2,loc_y-4.6,loc_z-3.5,8,8,rotation,side)
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "audio" && type == "jack_3.5" && rotation == 180 && side == "bottom") {
+        place(loc_x+3.15,depth-(wallthick+gap)-8-wallthick/2,loc_z-3.5,8,8,rotation,side) 
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+    if(class == "audio" && type == "jack_3.5" && rotation == 270 && side == "bottom") {
+        place(-gap-wallthick/2,loc_y+3.15,loc_z-3.5,8,8,rotation,side)
+            rotate([90,0,0]) cylinder(d=10, h=wallthick);
+    }
+}

mod/parametric_move.scad

@@ -0,0 +1,300 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: parametric_move_add
+    DESCRIPTION: places parametric additive objects 
+           TODO: none
+
+          USAGE: parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric[], size[], data[], mask[])
+
+                         type = component type
+                        loc_x = x location placement
+                        loc_y = y location placement
+                        loc_z = z location placement
+                         face = "top", "bottom", "left", "right", "front", "rear"
+                   rotation[] = object rotation
+                 parametric[] = parametric movement array
+                       size[] = size array x,y,z
+                       data[] = data filed
+                      mask[0] = true enables component mask
+                      mask[1] = mask length
+                      mask[2] = mask setback
+                      mask[3] = mstyle "default"
+
+*/
+
+module parametric_move_add(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, mask) {
+    
+    // absolute no parametrics
+    if(parametric[1] == false && parametric[2] == false && parametric[3] == false) {        
+        add(type, loc_x, loc_y, loc_z, face, rotation, size, data, mask);
+    }
+    // x axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == false && parametric[3] == false) {
+        if(parametric[0] == "case") {
+            add(type, loc_x+case_offset_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            add(type, loc_x+pcb_loc_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+    }
+    // y axis accessory parametrics
+    if(parametric[1] == false && parametric[2] == true && parametric[3] == false) {
+        if(parametric[0] == "case") {
+            add(type, loc_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            add(type, loc_x, loc_y+pcb_loc_y, loc_z, face, rotation, size, data, mask);
+        }
+    }
+    // z axis accessory parametrics
+    if(parametric[1] == false && parametric[2] == false && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            add(type, loc_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            add(type, loc_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            add(type, loc_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            add(type, loc_x, loc_y, loc_z+pcb_loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            add(type, loc_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            add(type, loc_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+    // xy axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == true && parametric[3] == false) {
+        if(parametric[0] == "case") {
+            add(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            add(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y, loc_z, face, rotation, size, data, mask);
+        }
+    }
+    // xz axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == false && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            add(type, loc_x+case_offset_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            add(type, loc_x+case_offset_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            add(type, loc_x+case_offset_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            add(type, loc_x+pcb_loc_x, loc_y, loc_z+pcb_loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            add(type, loc_x+pcb_loc_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            add(type, loc_x+pcb_loc_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+    // yz axis accessory parametrics
+    if(parametric[1] == false && parametric[2] == true && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            add(type, loc_x, loc_y+case_offset_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            add(type, loc_x, loc_y+case_offset_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            add(type, loc_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            add(type, loc_x, loc_y+pcb_loc_y, loc_z+pcb_loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            add(type, loc_x,loc_y+pcb_loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            add(type, loc_x, loc_y+pcb_loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+    // xyz axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == true && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            add(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            add(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            add(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            add(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y, loc_z+pcb_loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            add(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            add(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+}
+
+
+/*
+           NAME: parametric_move_sub
+    DESCRIPTION: places parametric subtractive objects 
+           TODO: none
+
+          USAGE: parametric_move_sub(type, loc_x, loc_y, loc_z, face, rotation, parametric[], size[], data[], mask[])
+
+                         type = component type
+                        loc_x = x location placement
+                        loc_y = y location placement
+                        loc_z = z location placement
+                         face = "top", "bottom", "left", "right", "front", "rear"
+                   rotation[] = object rotation
+                 parametric[] = parametric movement array
+                       size[] = size array x,y,z
+                      mask[0] = true enables component mask
+                      mask[1] = mask length
+                      mask[2] = mask setback
+                      mask[3] = mstyle "default"
+
+*/
+
+module parametric_move_sub(type, loc_x, loc_y, loc_z, face, rotation, parametric, size, data, mask) {
+    
+    // absolute no parametrics
+    if(parametric[1] == false && parametric[2] == false && parametric[3] == false) {        
+        sub(type, loc_x, loc_y, loc_z, face, rotation, size, data, mask);
+    }
+    // x axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == false && parametric[3] == false) {
+        if(parametric[0] == "case") {
+            sub(type, loc_x+case_offset_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            sub(type, loc_x+pcb_loc_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+    }
+    // y axis accessory parametrics
+    if(parametric[1] == false && parametric[2] == true && parametric[3] == false) {
+        if(parametric[0] == "case") {
+            sub(type, loc_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            sub(type, loc_x, loc_y+pcb_loc_y, loc_z, face, rotation, size, data, mask);
+        }
+    }
+    // z axis accessory parametrics
+    if(parametric[1] == false && parametric[2] == false && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            sub(type, loc_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            sub(type, loc_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            sub(type, loc_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            sub(type, loc_x, loc_y, loc_z+pcb_loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            sub(type, loc_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            sub(type, loc_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+    // xy axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == true && parametric[3] == false) {
+        if(parametric[0] == "case") {
+            sub(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            sub(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y,loc_z, face, rotation, size, data, mask);
+        }
+    }
+    // xz axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == false && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            sub(type, loc_x+case_offset_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            sub(type, loc_x+case_offset_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            sub(type, loc_x+case_offset_x, loc_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            sub(type, loc_x+pcb_loc_x, loc_y, loc_z+pcb_loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            sub(type, loc_x+pcb_loc_x, loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            sub(type, loc_x+pcb_loc_x, loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+    // yz axis accessory parametrics
+    if(parametric[1] == false && parametric[2] == true && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            sub(type, loc_x, loc_y+case_offset_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            sub(type, loc_x, loc_y+case_offset_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            sub(type, loc_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            sub(type, loc_x, loc_y+pcb_loc_y, loc_z+pcb_loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            sub(type, loc_x, loc_y+pcb_loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            sub(type, loc_x, loc_y+pcb_loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+    // xyz axis accessory parametrics
+    if(parametric[1] == true && parametric[2] == true && parametric[3] == true) {
+        if(parametric[0] == "case" && face == "top") {
+            sub(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face == "bottom") {
+            sub(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "case" && face != "bottom" && face != "top") {
+            sub(type, loc_x+case_offset_x, loc_y+case_offset_y, loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc") {
+            sub(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y, loc_z+pcb_loc_z, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "top") {
+            sub(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y, loc_z+case_offset_tz+case_offset_bz, face, rotation, size, data, mask);
+        }
+        if(parametric[0] == "sbc-case_z" && face == "bottom") {
+            sub(type, loc_x+pcb_loc_x, loc_y+pcb_loc_y, loc_z+case_offset_bz, face, rotation, size, data, mask);
+        }
+    }
+}

mod/place.scad

@@ -0,0 +1,66 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: place
+    DESCRIPTION: transformation to place objects on either side of a geometric plane of a given thickness
+           TODO: none
+
+          USAGE: place(x, y, z, size_x, size_y, rotation, side)
+
+*/
+
+/* placement module *must be first* for children() */
+module place(x, y, z, size_x, size_y, rotation, side) {
+
+    if (side == "top") {
+        if (rotation == 0 || rotation == 90 || rotation == 180 || rotation == 270) {    
+            if ((rotation >= 0 && rotation < 90) || (rotation < -270 && rotation > -360))
+                translate([x,y,z]) rotate([0,0,-rotation]) children();
+
+            if ((rotation >= 90 && rotation < 180) || (rotation < -180 && rotation >= -270))
+                translate([x,y+size_x,z]) rotate([0,0,-rotation]) children();
+           
+            if ((rotation >= 180 && rotation < 270) || (rotation < -90 && rotation >= -180))
+                translate([x+size_x,y+size_y,z]) rotate([0,0,-rotation]) children(0);
+           
+            if ((rotation >= 270 && rotation < 360) || (rotation < 0 && rotation >= -90))
+                translate([x+size_y,y,z]) rotate([0,0,-rotation]) children(); }
+        else {
+            translate([x,y,z]) rotate([0,0,-rotation]) children();            
+        }
+    }   
+    if (side == "bottom") {
+        if (rotation == 0 || rotation == 90 || rotation == 180 || rotation == 270) {   
+            if ((rotation >= 0 && rotation < 90) || (rotation < -270 && rotation > -360))
+                translate([x+size_x,y,z]) rotate([0,180,rotation]) children();
+           
+            if ((rotation >= 90 && rotation < 180) || (rotation < -180 && rotation >= -270))
+                translate([x+size_y,y+size_x,z]) rotate([0,180,rotation]) children();
+               
+            if ((rotation >= 180 && rotation < 270) || (rotation < -90 && rotation >= -180))
+                translate([x,y+size_y,z]) rotate([0,180,rotation]) children();
+           
+            if ((rotation >= 270 && rotation < 360) || (rotation < 0 && rotation >= -90))
+                translate([x,y,z]) rotate([0,180,rotation]) children(); }
+        else {
+            translate([x,y,z]) rotate([0,180,rotation]) children();
+            
+        }
+    }    
+    children([1:1:$children-1]);
+}

mod/sub.scad

@@ -0,0 +1,84 @@
+/*
+    This file is part of SBC Case Builder https://github.com/hominoids/SBC_Case_Builder
+    Copyright 2022,2023,2024 Edward A. Kisiel hominoid@cablemi.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>
+    Code released under GPLv3: http://www.gnu.org/licenses/gpl.html
+
+
+           NAME: sub
+    DESCRIPTION: places subtractive objects 
+           TODO: none
+
+          USAGE: sub(type, loc_x, loc_y, loc_z, face, rotation, size[], data[], mask[])
+
+                         type = component type
+                        loc_x = x location placement
+                        loc_y = y location placement
+                        loc_z = z location placement
+                         face = "top", "bottom", "left", "right", "front", "rear"
+                   rotation[] = object rotation
+                 parametric[] = parametric movement array
+                       size[] = size array x,y,z
+                       data[] = data variable on type
+                      mask[0] = true enables component mask
+                      mask[1] = mask length
+                      mask[2] = mask setback
+                      mask[3] = mstyle "default"
+
+*/
+
+module sub(type, loc_x, loc_y, loc_z, face, rotation, size, data, mask) {
+
+    size_x = size[0];
+    size_y = size[1];
+    size_z = size[2];
+    enablemask = mask[0];
+    mlen = mask[1];
+    msetback = mask[2];
+    mstyle = mask[3];
+
+    if(type == "art") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) art(data[0],data[1],data[2]); 
+    }
+    if(type == "fan_mask") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) fan_mask(size_x, size_z, data[0]);
+    }
+    if(type == "hd_holes") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) hd_bottom_holes(data[0],data[1],data[2],data[3]);
+    }    
+    if(type == "knockout") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) knockout(size_x,size_y,data[0],size_z,data[1],data[2]);
+    }    
+    if(type == "rectangle") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) slab_r([size_x,size_y,size_z],data[0]);
+    }
+    if(type == "round") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) cylinder(d=size_x,h=size_z);
+    }
+    if(type == "slot") {
+        translate([loc_x,loc_y,loc_z]) rotate(rotation) slot(size_x,size_y,size_z);
+    }
+    if(type == "sphere") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) sphere(d=size_x);
+    }
+    if(type == "text") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) linear_extrude(height = size_z) text(data_2, size=data[0]);
+    }
+    if(type == "vent") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) vent(size_x,size_y,size_z,data[3],data[0],data[1],data[2]);
+    }
+    if(type == "vent_hex") {
+        translate([loc_x,loc_y,loc_z])  rotate(rotation) vent_hex(size_x,size_y,size_z,data[0],data[1],data[2]);
+    }
+}