Holder for a 16x2 LCD display for Prusa i3

diff --git a/i3-16x2-lcd-display.scad b/i3-16x2-lcd-display.scad
new file mode 100644 (file)
index 0000000..9f94747
--- /dev/null
+++ b/i3-16x2-lcd-display.scad
@@ -0,0 +1,86 @@
+wall = 1.5;
+tolerance = 0.5;
+
+infty = 300;
+eps = 0.01;
+
+pcb_w = 80 + 2*tolerance;
+pcb_h = 36 + 2*tolerance;
+pcb_thick = 1.6 + tolerance;
+
+disp_w = 71 + 2*tolerance;
+disp_h = 24 + 2*tolerance;
+disp_thick = 7.2 + tolerance;
+disp_hole_thick = 4 + tolerance;
+
+disp_yoff = -1;
+
+window_w = 68;
+window_h = 18;
+
+ledside_clip_w = disp_h/2;
+
+cable_dist = 5;
+
+trimpot_w = 7.5 + 1.5;
+trimpot_h = 6.5 + 1.5;
+trimpot_hole = 4;
+trimpot_xoff = 11;
+trimpot_yoff = 3.25;
+
+frame_thick = 6 + tolerance;
+support_w = 0.75;
+
+module box_body() {
+       translate([-pcb_w/2 - wall, -pcb_h/2 - wall, 0])
+               cube([pcb_w + 2*wall, pcb_h + 2*wall,
+                       cable_dist + pcb_thick + disp_thick + wall]);
+       translate([-pcb_w/2 - wall, , 0])
+               cube([pcb_w + 2*wall, pcb_h/2 + wall,
+                       frame_thick + 2*cable_dist + pcb_thick + disp_thick + 2*wall]);
+};
+
+module box() {
+       difference() {
+               box_body();
+               // front hole
+               hull() {
+                       translate([-window_w/2-wall, disp_yoff-window_h/2-wall, -eps])
+                               cube([window_w+2*wall, window_h+2*wall, eps]);
+                       translate([-window_w/2, disp_yoff-window_h/2, wall])
+                               cube([window_w, window_h, eps]);
+               };
+               // display hole
+               translate([-disp_w/2, disp_yoff - disp_h/2, wall])
+                       cube([disp_w, disp_h, frame_thick + 2*cable_dist + pcb_thick + disp_thick]);
+               // pcb hole
+               translate([-pcb_w/2, -pcb_h/2, wall + disp_hole_thick])
+                       cube([pcb_w, pcb_h, frame_thick + 2*cable_dist + pcb_thick + disp_thick + wall + eps - disp_hole_thick]);
+               // trimpot slot
+               translate([pcb_w/2-trimpot_xoff-trimpot_w/2, pcb_h/2-trimpot_h, wall])
+                       cube([trimpot_w, trimpot_h, disp_thick+eps]);
+               // trimpot hole
+               translate([pcb_w/2-trimpot_xoff, pcb_h/2-trimpot_yoff, -eps])
+                       cylinder(r1 = trimpot_hole/2 + wall,
+                               r2 = trimpot_hole/2, h = wall + 2*eps);
+               // hole for the frame
+               translate([-pcb_w/2-wall-eps, support_w, cable_dist + pcb_thick + disp_thick + wall])
+                       cube([pcb_w + 2*wall + 2*eps, pcb_h/4 - support_w, frame_thick]);
+       };
+       // LED-side battery clip
+       hull() {
+               translate([-pcb_w/2, -ledside_clip_w/2,
+                       wall + pcb_thick + disp_thick])
+                       cube([wall, ledside_clip_w, wall]);
+               translate([-pcb_w/2, -ledside_clip_w/2,
+                       3*wall + pcb_thick + disp_thick])
+                       cube([eps, ledside_clip_w, eps]);
+       };
+       // LED-side battery clip
+       translate([pcb_w/2-wall, -pcb_h/2-eps, wall + pcb_thick + disp_thick])
+               cube([wall, pcb_h + 2*eps, wall]);
+       
+};
+
+box($fn = 128);
+