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Create a PCB Caddy with OpenSCAD's hull() Command
use <hull.scad>
w = 66.35;
l = 79;
pin_locations = [ [-w/2, -l/2, 0], [-w/2, l/2, 0],
[ w/2, -l/2, 0], [ w/2, l/2, 0] ];
thickness = 1;
$fn = 24;
module place(i){
translate(pin_locations[i])
children(0);
}
module foot(){
cylinder(d=7, h=thickness);
}
module standoff(){
cylinder(d1=7, d2=5, h=3);
cylinder(d=5, h=7);
}
module cross_bottom(){
multiHull(){
cylinder(d=10, h=thickness);
place(0) foot();
place(1) foot();
place(2) foot();
place(3) foot();
}
}
module ring_bottom(){
sequentialHull(){
place(0) foot();
place(1) foot();
place(3) foot();
place(2) foot();
place(0) foot();
}
}
module bumper(){
difference(){
rounded_box(pin_locations, radius=9/2, height=10);
translate([0,0,-1])
rounded_box(pin_locations, radius=7/2, height=12);
}
}
module PCB_case(){
difference(){
// frame
union(){
cross_bottom();
ring_bottom();
bumper();
for (i=[0:3]){
place(i) standoff();
}
}
// difference screw holes
for (i=[0:3]){
place(i) cylinder(d=3, h=100, center=true);
}
}
}
PCB_case();
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