ready forfirst prototype

README.md

@@ -12,17 +12,19 @@ make 3mf
 make dxf
 ```
 
-_You only need the DXF files if you want to CNC the plate or weight._
+_You only need the DXF files if you want to CNC the plate or weight. I also included STEP files for CNCing._
 
 ## Hardware:
 
-- Threaded inserts for the plate, USB C daughter board and standoffs are M2, height 2mm, outer diameter 3.2 (10x)
+- Threaded inserts for the plate, USB C daughter board, standoffs and weight are M2, height 2mm, outer diameter 3.2 (10x)
 - Screws for the plate and USB-C daughter board are M2, length 3-3.5mm (6x)
 - Screws for the PCB mounting are M2, length 3.5-4.6mm (4x)
 - Standoffs are M2, length 3mm (4x)
+- Screws for the weight are counter sunk M2, length 3-3.5mm (4x)
 
 Threaded inserts from [AliExpress](https://www.aliexpress.com/item/1005004873154281.html).
 Screws from [AliExpress](https://www.aliexpress.com/item/32810852732.html).
+Screws for the weight from [AliExpress](https://www.aliexpress.com/item/1005002044837898.html).
 Standoffs from [AliExpress](https://www.aliexpress.com/item/1005003328519584.html).
 
 You can also find the CAD files on [printables.com](https://www.printables.com/model/531838-noisy-cricket-mini-gaming-keyboard).

lower_case.scad

@@ -20,6 +20,10 @@ color("SaddleBrown") difference() {
     translate([0, pcb_depth-2*pcb_radius, 0]) cylinder(h=case_thickness+standoff_height+pcb_thickness+5, r=pcb_radius+1);
     translate([pcb_width-2*pcb_radius, pcb_depth-2*pcb_radius, 0]) cylinder(h=case_thickness+standoff_height+pcb_thickness+5, r=pcb_radius+1);
   }
+  
+  // hole for reset button
+  translate([reset_x - pcb_radius, reset_y - pcb_radius, 0]) cylinder(h=case_thickness, r=1);
+  translate([reset_x - pcb_radius-1.4, reset_y - pcb_radius-1.5, 1.5]) mirror([1,0,0]) rotate([0,0,90]) linear_extrude(0.2) text(text="RESET ►", size=3, font="Liberation Sans:style=Bold", halign="right");
 
   // plate_mounting
   translate([20, pcb_depth - pcb_radius+1, case_thickness+standoff_height+pcb_thickness+5-plate_thickness]) lug(hole=false);
@@ -79,4 +83,9 @@ color("SaddleBrown") difference() {
   }
   translate([pcb_width/2,pcb_depth/2+1,1.5]) mirror([1,0,0]) linear_extrude(0.2) text(text="noisy cricket", size=10, font="Liberation Sans:style=Bold", halign="center");
   translate([pcb_width/2,pcb_depth/2-11,1.5]) mirror([1,0,0]) linear_extrude(0.2) text(text="© XenGi 2023", size=6, font="Liberation Sans:style=Bold", halign="center");
+  // threaded inserts
+  translate([10,10,1.5]) cylinder(h=threaded_insert_height, d=3);
+  translate([pcb_width-2*pcb_radius-10,10,1.5]) cylinder(h=threaded_insert_height, d=3);
+  translate([10,pcb_depth-2*pcb_radius-10,1.5]) cylinder(h=threaded_insert_height, d=3);
+  translate([pcb_width-2*pcb_radius-10,pcb_depth-2*pcb_radius-10,1.5]) cylinder(h=threaded_insert_height, d=3);
 }

util.scad

@@ -17,6 +17,9 @@ upper_case_height = 5;
 
 standoff_height = 3;
 
+reset_x = 111;
+reset_y = 42;
+
 mx = 19.05;
 
 mounting_holes = [
@@ -114,4 +117,3 @@ module mx_2x1_cutout() {
     translate([-11.9, -0.5, 0]) cube([8, 15, pcb_thickness+0.1], center=true);
   }
 }
-

weight.scad

@@ -4,9 +4,15 @@ include <util.scad>
 
 $fn = 64;
 
-projection(cut=true) hull() {
-  translate([5,5,0]) cylinder(h=1.5, d=10);
-  translate([pcb_width-2*pcb_radius-5,5,0]) cylinder(h=1.5, d=10);
-  translate([5,pcb_depth-2*pcb_radius-5,0]) cylinder(h=1.5, d=10);
-  translate([pcb_width-2*pcb_radius-5,pcb_depth-2*pcb_radius-5,0]) cylinder(h=1.5, d=10);
+projection(cut=true) difference() {
+  hull() {
+    translate([5,5,0]) cylinder(h=1.5, d=10);
+    translate([pcb_width-2*pcb_radius-5,5,0]) cylinder(h=1.5, d=10);
+    translate([5,pcb_depth-2*pcb_radius-5,0]) cylinder(h=1.5, d=10);
+    translate([pcb_width-2*pcb_radius-5,pcb_depth-2*pcb_radius-5,0]) cylinder(h=1.5, d=10);
+  }
+  translate([10,10,0]) cylinder(h=1.5, d=2.2);
+  translate([pcb_width-2*pcb_radius-10,10,0]) cylinder(h=1.5, d=2.2);
+  translate([10,pcb_depth-2*pcb_radius-10,0]) cylinder(h=1.5, d=2.2);
+  translate([pcb_width-2*pcb_radius-10,pcb_depth-2*pcb_radius-10,0]) cylinder(h=1.5, d=2.2);
 }