Delete the unused openscad design
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6 changed files with 0 additions and 198 deletions
2
openscad/.gitignore
vendored
2
openscad/.gitignore
vendored
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*.stl
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pcb_dimensions.scad
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.PHONY: all clean
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all: case.stl mounting_bracket.stl
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pcb_dimensions.scad: generate.py ../kicad/Digital\ Audio\ Switch.kicad_pcb
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python3 $< > $@
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%.stl: case.scad pcb_dimensions.scad
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openscad -o $@ -D MODE=\"$(basename $@)\" $<
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clean:
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rm -f case.stl pcb_dimensions.scad
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$fn = 50;
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include <pcb_mount.scad>;
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MODE = "all"; // ["all", mounting_bracket", "case"]
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TOLERANCE=0.5;
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wall_width = 3;
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side_padding = 10;
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case_width = pcb_width + (wall_width * 2) + (TOLERANCE * 2) + (side_padding * 2);
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case_depth = pcb_height + (wall_width * 2) + (TOLERANCE * 2);
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bottom_height = 30;
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pcb_spacing = 10;
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pcb_thickness = 1.6;
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inside_offset = [wall_width + TOLERANCE + side_padding,wall_width + TOLERANCE,wall_width];
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module rounded_box(box, r) {
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hull() {
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cylinder(r=r,h=box.z);
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translate([0,box.y])
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cylinder(r=r,h=box.z);
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translate([box.x,0])
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cylinder(r=r,h=box.z);
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translate([box.x, box.y])
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cylinder(r=r,h=box.z);
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}
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}
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module case() {
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difference() {
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rounded_box(box=[case_width, case_depth, bottom_height], r=wall_width);
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translate([wall_width,wall_width,wall_width + 1])
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rounded_box(box=[pcb_width + (TOLERANCE * 2) + (side_padding * 2),
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pcb_height + (TOLERANCE * 2),
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bottom_height],
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r=wall_width);
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translate(inside_offset - [0,0,wall_width + 0.5]) {
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drill_hole_cutouts(h=pcb_spacing);
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posts(w=wall_width, h=wall_width/2 + 0.5);
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}
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}
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}
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if (MODE == "mounting_bracket") {
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color("purple")
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translate(inside_offset)
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pcb_mount(w=wall_width,h=pcb_spacing);
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} else if (MODE == "case" || MODE == "all") {
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case();
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if (MODE == "all") {
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color("purple")
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translate(inside_offset)
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pcb_mount(w=wall_width,h=pcb_spacing);
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color("green", 0.5)
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translate(inside_offset + [0,0,pcb_spacing]) {
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difference() {
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cube([pcb_width, pcb_height, pcb_thickness]);
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translate([0,0,-0.5])
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drill_hole_cutouts(h=pcb_thickness + 1);
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}
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}
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}
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}
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import sexpdata as s
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TOLERANCE = 0.2
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def cadr(x):
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return s.car(s.cdr(x))
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def cddr(x):
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return s.cdr(s.cdr(x))
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with open("../kicad/Digital Audio Switch.kicad_pcb", "r") as f:
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kicad_pcb = s.load(f)
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# Assumes the board is cut out with a single rectangle
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[rect] = [
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s.cdr(x)
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for x in kicad_pcb
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if s.car(x) == s.Symbol("gr_rect") and [s.Symbol("layer"), "Edge.Cuts"] in s.cdr(x)
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]
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[[start_x, start_y]] = [s.cdr(x) for x in rect if s.car(x) == s.Symbol("start")]
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[[end_x, end_y]] = [s.cdr(x) for x in rect if s.car(x) == s.Symbol("end")]
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[start_x, start_y, end_x, end_y] = [
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min(start_x, end_x),
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min(start_y, end_y),
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max(start_x, end_x),
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max(start_y, end_y),
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]
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width = end_x - start_x
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height = end_y - start_y
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print(
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f"""
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pcb_width = {width};
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pcb_height = {height};
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""".strip()
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)
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footprints = [
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s.cdr(x)
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for x in kicad_pcb
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if s.car(x) == s.Symbol("footprint") and s.car(s.cdr(x)).startswith("MountingHole:")
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]
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holes = []
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for hole in footprints:
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[[hole_x, hole_y]] = [s.cdr(x) for x in hole if s.car(x) == s.Symbol("at")]
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pads = [cddr(x) for x in hole if s.car(x) == s.Symbol("pad")]
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for pad in pads:
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[[pad_x, pad_y]] = [s.cdr(x) for x in pad if s.car(x) == s.Symbol("at")]
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drills = [cadr(x) for x in pad if s.car(x) == s.Symbol("drill")]
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for diameter in drills:
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pos_x = (hole_x + pad_x) - start_x
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pos_y = (hole_y + pad_y) - start_y
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holes.append([pos_x, pos_y, diameter])
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# Y coordinates are inverted between KiCad and OpenSCAD
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print(f"drill_holes = {[[[x, -y + height], r] for x, y, r in holes]};")
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include <pcb_dimensions.scad>;
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TOLERANCE=0.2;
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h=10;
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w=3;
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module pcb_mount(w=w,h=h) {
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difference() {
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union() {
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posts(w=w,h=h);
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frame(w=w);
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}
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drill_hole_cutouts(h=h);
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}
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}
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module drill_hole_cutouts(h=h) {
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for (hole=drill_holes) {
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pos = hole[0];
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diameter = hole[1] + TOLERANCE;
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translate([pos.x, pos.y, -0.5]) {
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cylinder(d=diameter,h=h + 1);
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}
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}
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}
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module posts(w=w,h=h) {
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// Posts
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for (hole=drill_holes) {
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pos = hole[0];
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diameter = hole[1] + TOLERANCE;
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translate(pos) {
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difference() {
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cylinder(d=diameter + (w * 2), h=h);
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translate([0,0,-0.5])
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cylinder(d=diameter,h=h + 1);
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}
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}
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}
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}
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module frame(w=w) {
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min_x = min([for (hole=drill_holes) hole[0].x]);
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min_y = min([for (hole=drill_holes) hole[0].y]);
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max_x = max([for (hole=drill_holes) hole[0].x]);
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max_y = max([for (hole=drill_holes) hole[0].y]);
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max_diameter = max([for (hole=drill_holes) hole[1]]);
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translate([min_x - (w / 2), min_y - (w / 2)]) {
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difference() {
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cube([max_x - min_x + w, max_y - min_y + w, w]);
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translate([w, w, -0.5])
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cube([max_x - min_x - w, max_y - min_y - w, w + 1]);
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}
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}
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}
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@ -1 +0,0 @@
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sexpdata
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