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keyboard_scad/backplate.scad
2026-02-22 11:33:39 +01:00

99 lines
3.4 KiB
OpenSCAD

// --- Toggle which part to render ---
render_part = "full";
// --- Parameters ---
columns = 14;
rows = 5;
u_size = 19.05;
switch_outer_width = 14.2;
switch_inner_width = 13.2;
switch_total_height = 14.2;
notch_height = 4.0;
plate_thickness = 1.5;
margin = 5.0;
// --- Calculated Plate Dimensions ---
plate_width = (columns - 1) * u_size + switch_outer_width + (margin * 2);
plate_height = (rows - 1) * u_size + switch_total_height + (margin * 2);
split_point = plate_width / 2;
// --- Modules ---
module switch_cutout() {
union() {
cube([switch_inner_width, switch_total_height, plate_thickness + 2], center=true);
translate([0, (switch_total_height - (switch_total_height-notch_height)/2)/2, 0])
cube([switch_outer_width, (switch_total_height-notch_height)/2, plate_thickness + 2], center=true);
translate([0, -(switch_total_height - (switch_total_height-notch_height)/2)/2, 0])
cube([switch_outer_width, (switch_total_height-notch_height)/2, plate_thickness + 2], center=true);
}
}
module stabilizer_cutout(wire_len_u) {
dist = (wire_len_u == 6.25) ? 100 : 23.85;
union() {
switch_cutout();
for(m = [-1, 1]) {
translate([m * dist/2, 0, 0]) {
cube([3.3, 14.0, plate_thickness + 2], center=true);
translate([m * 0.5, 0, 0])
cube([4.3, 8.0, plate_thickness + 2], center=true);
}
}
}
}
module whole_plate() {
difference() {
cube([plate_width, plate_height, plate_thickness]);
translate([margin + switch_outer_width/2, margin + switch_total_height/2, plate_thickness/2]) {
for (r = [0 : rows - 1]) {
for (c = [0 : columns - 1]) {
translate([c * u_size, r * u_size, 0]) {
// --- ROW 0: BOTTOM ROW ---
if (r == 0) {
if (c < 3) {
switch_cutout();
}
else if (c == 3) {
translate([u_size * 3, 0, 0]) stabilizer_cutout(6.25);
}
else if (c >= 10) {
switch_cutout();
}
}
// --- ROW 2: THIRD ROW (ENTER) ---
else if (r == 2) {
if (c < 12) {
switch_cutout();
} else if (c == 12) {
translate([u_size * 0.5, 0, 0]) stabilizer_cutout(2);
}
}
// --- ALL OTHER ROWS ---
else {
switch_cutout();
}
}
}
}
}
}
}
// --- Render ---
if (render_part == "left") {
intersection() { whole_plate(); cube([split_point, plate_height, plate_thickness + 2]); }
} else if (render_part == "right") {
translate([-split_point, 0, 0]) intersection() {
whole_plate();
translate([split_point, 0, -1]) cube([split_point, plate_height, plate_thickness + 2]);
}
} else {
whole_plate();
}