initial commit

backplate.scad

@@ -0,0 +1,99 @@
+// --- 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();
+}