Add keyboard usb-c connector housing

For a Ducky Shine 6 keyboard, replaces the housing used for the factory
USB Micro-B connector. Accommodates a 9mm x 14mm JRC-B008 USB-C breakout
board.

ducky-shine-6-usbc.scad

@@ -0,0 +1,105 @@
+/* Ducky Shine 6 USB-C Connector Housing
+
+   For a Ducky Shine 6 keyboard, replaces the housing used for the factory USB
+   Micro-B connector. Accommodates a 9mm x 14mm JRC-B008 USB-C breakout board.
+*/
+
+$fn = 50;
+
+mode = "bottom"; // ["top", "bottom", "both"]
+
+fit_tolerance = 0.4;
+housing_width = 14;
+housing_depth = 14;
+housing_height = 6;
+exposed_connector = 4;
+cable_insert_length = 7.3;
+
+module top() {
+  translate([0,0,housing_height / 2])
+    cube([housing_width, housing_depth, housing_height / 2]);
+}
+
+module bottom() {
+  lip_width = 1.5;
+  tab_depth = 6;
+  left_tab_width = 5.5;
+  right_tab_width = 7.3;
+  screw_diameter = 3;
+
+  // Left lip + tab
+  cube([housing_width, housing_depth, housing_height / 2]);
+  translate([-lip_width, 0, 0]) {
+    cube([lip_width + fit_tolerance, housing_depth, housing_height / 4]);
+
+    translate([-left_tab_width, housing_depth - 2 - tab_depth, 0]) {
+      difference() {
+        cube([1.5 + fit_tolerance + left_tab_width, tab_depth, housing_height / 4]);
+        translate([3, 3, -1])
+          cylinder(h=housing_height + 2, r=screw_diameter / 2);
+      }
+    }
+
+  }
+
+  // Right tab
+  translate([housing_width - fit_tolerance,0,0]) {
+    difference() {
+      cube([fit_tolerance + right_tab_width, tab_depth, housing_height / 4]);
+      translate([right_tab_width - 3, 3, -1])
+        cylinder(h=housing_height + 2, r=screw_diameter / 2);
+
+    }
+  }
+
+}
+
+
+module cable_port() {
+  translate([0,2.75,2.75])
+    rotate([0,90,0])
+    cylinder(h=cable_insert_length, r=2.75);
+}
+
+module usb_cutout() {
+  cutout_height = 3.2 + (2 * fit_tolerance);
+  cutout_width = 9 + (2 * fit_tolerance);
+  cutout_depth = 14 + (2 * fit_tolerance);
+  connector_depth = 10.6;
+  connector_lip_offset = connector_depth - exposed_connector - fit_tolerance;
+
+  translate([(housing_width - cutout_width) / 2, 0, (housing_height - cutout_height) / 2]) {
+    difference() {
+      cube([cutout_width, cutout_depth, cutout_height]);
+      translate([-fit_tolerance, connector_lip_offset, -fit_tolerance])
+        cube([cutout_width + (fit_tolerance * 2), cutout_depth - connector_lip_offset + fit_tolerance, 0.8]);
+    }
+  }
+}
+
+module cable_port_cutout() {
+  usb_cutout_width = 9 + (2 * fit_tolerance);
+  usb_cutout_offset = (housing_width - usb_cutout_width) / 2;
+  cutout_length = usb_cutout_width + usb_cutout_offset;
+  translate([-cutout_length + fit_tolerance, 2.75, 2.75])
+    rotate([0,90,0])
+    cylinder(h=cutout_length + cable_insert_length, r=2);
+}
+
+difference() {
+  union() {
+    if (mode == "top" || mode == "both")
+      top();
+    if (mode == "bottom" || mode == "both") {
+      bottom();
+      translate([housing_width - fit_tolerance,housing_depth - 5.5,0])
+        cable_port();
+    }
+  }
+  union () {
+    translate([0, -(2 + fit_tolerance), 0])
+      usb_cutout();
+    translate([housing_width - fit_tolerance, housing_depth - 5.5, 0])
+      cable_port_cutout();
+  }
+}