i3-16x2-lcd-display.scad

   1 wall = 1.5;
   2 tolerance = 0.5;
   3
   4 infty = 300;
   5 eps = 0.01;
   6
   7 pcb_w = 80 + 2*tolerance;
   8 pcb_h = 36 + 2*tolerance;
   9 pcb_thick = 1.6 + tolerance;
  10
  11 disp_w = 71 + 2*tolerance;
  12 disp_h = 24 + 2*tolerance;
  13 disp_thick = 7.2 + tolerance;
  14 disp_hole_thick = 4 + tolerance;
  15
  16 disp_yoff = -1;
  17
  18 window_w = 68;
  19 window_h = 18;
  20
  21 ledside_clip_w = disp_h/2;
  22
  23 cable_dist = 5;
  24
  25 trimpot_w = 7.5 + 1.5;
  26 trimpot_h = 6.5 + 1.5;
  27 trimpot_hole = 4;
  28 trimpot_xoff = 11;
  29 trimpot_yoff = 3.25;
  30
  31 frame_thick = 6 + tolerance;
  32 support_w = 0.75;
  33
  34 module box_body() {
  35         translate([-pcb_w/2 - wall, -pcb_h/2 - wall, 0])
  36                 cube([pcb_w + 2*wall, pcb_h + 2*wall,
  37                         cable_dist + pcb_thick + disp_thick + wall]);
  38         translate([-pcb_w/2 - wall, , 0])
  39                 cube([pcb_w + 2*wall, pcb_h/2 + wall,
  40                         frame_thick + 2*cable_dist + pcb_thick + disp_thick + 2*wall]);
  41 };
  42
  43 module box() {
  44         difference() {
  45                 box_body();
  46                 // front hole
  47                 hull() {
  48                         translate([-window_w/2-wall, disp_yoff-window_h/2-wall, -eps])
  49                                 cube([window_w+2*wall, window_h+2*wall, eps]);
  50                         translate([-window_w/2, disp_yoff-window_h/2, wall])
  51                                 cube([window_w, window_h, eps]);
  52                 };
  53                 // display hole
  54                 translate([-disp_w/2, disp_yoff - disp_h/2, wall])
  55                         cube([disp_w, disp_h, frame_thick + 2*cable_dist + pcb_thick + disp_thick]);
  56                 // pcb hole
  57                 translate([-pcb_w/2, -pcb_h/2, wall + disp_hole_thick])
  58                         cube([pcb_w, pcb_h, frame_thick + 2*cable_dist + pcb_thick + disp_thick + wall + eps - disp_hole_thick]);
  59                 // trimpot slot
  60                 translate([pcb_w/2-trimpot_xoff-trimpot_w/2, pcb_h/2-trimpot_h, wall])
  61                         cube([trimpot_w, trimpot_h, disp_thick+eps]);
  62                 // trimpot hole
  63                 translate([pcb_w/2-trimpot_xoff, pcb_h/2-trimpot_yoff, -eps])
  64                         cylinder(r1 = trimpot_hole/2 + wall,
  65                                 r2 = trimpot_hole/2, h = wall + 2*eps);
  66                 // hole for the frame
  67                 translate([-pcb_w/2-wall-eps, support_w, cable_dist + pcb_thick + disp_thick + wall])
  68                         cube([pcb_w + 2*wall + 2*eps, pcb_h/4 - support_w, frame_thick]);
  69         };
  70         // LED-side battery clip
  71         hull() {
  72                 translate([-pcb_w/2, -ledside_clip_w/2,
  73                         wall + pcb_thick + disp_thick])
  74                         cube([wall, ledside_clip_w, wall]);
  75                 translate([-pcb_w/2, -ledside_clip_w/2,
  76                         3*wall + pcb_thick + disp_thick])
  77                         cube([eps, ledside_clip_w, eps]);
  78         };
  79         // LED-side battery clip
  80         translate([pcb_w/2-wall, -pcb_h/2-eps, wall + pcb_thick + disp_thick])
  81                 cube([wall, pcb_h + 2*eps, wall]);
  82
  83 };
  84
  85 box($fn = 128);
  86