parts/speedometer.scad

   1 infty = 200;
   2 eps = 0.05;
   3
   4 tube_d = 31.8;
   5 tube_d1 = 28;
   6 body_w = 10;
   7 body_h = 30;
   8
   9 wall = 2;
  10
  11 led_d = 3 + 0.5;
  12
  13 zip_w = 3.5;
  14 zip_h = 2.5;
  15
  16 top_w = 6+2*wall;
  17 top_led_h = body_h-9;
  18
  19 cable_w = 6;
  20 cable_h = 3;
  21
  22 module body() {
  23         hull() {
  24                 cylinder(r = tube_d/2 + wall, h = body_w);
  25                 translate([body_h + tube_d/2, 0, 0])
  26                         scale([0.75, 1, 1])
  27                         cylinder(r = top_w/2, h = body_w);
  28         }
  29 }
  30
  31 module chamber() {
  32 /*
  33         intersection() {
  34                 hull() {
  35                         translate([0, -tube_d/2, wall])
  36                                 cube([eps, infty, infty]);
  37                         translate([tube_d/2+body_h-eps, -top_w/2+wall, wall])
  38                                 cube([eps, infty, infty]);
  39                 }
  40                 translate([tube_d/2 + 2*wall, -tube_d/2, 0])
  41                         cube([body_h-3*wall-5, tube_d+2*wall, body_w+eps]);
  42         }
  43 */
  44         difference() {
  45                 hull() {
  46                         translate([0, 0, wall])
  47                                 cylinder(r = tube_d/2, h = body_w);
  48                         translate([tube_d/2+body_h-eps, 0, wall])
  49                                 scale([0.75, 1, 1])
  50                                 cylinder(r = top_w/2-wall, h = body_w);
  51                 }
  52                 // bottom part
  53                 translate([0, -tube_d/2-wall-eps, 0])
  54                         cube([tube_d/2+wall+zip_h/2, tube_d+2*wall, body_w+2*wall]);
  55                 // top covered part
  56                 translate([top_led_h + tube_d/2, -tube_d/2, body_w-wall])
  57                         cube([infty, tube_d, 2*wall]);
  58                 // wall with hole for LED
  59                 translate([top_led_h + tube_d/2, 1, wall])
  60                         cube([wall, infty, infty]);
  61         }
  62 }
  63
  64 module holder() {
  65         difference() {
  66                 body();
  67                 // cut off the bottom part
  68                 translate([-infty+tube_d/4, -infty/2, -infty/2]) cube(infty);
  69                 // main tube
  70                 translate([0, 0, -eps])
  71                         cylinder(r1 = tube_d1/2, r2 = tube_d/2, h = body_w + 2*eps);
  72                 // zip tie hole
  73                 scale([1, 1.05, 1])
  74                 translate([0, 0, body_w/2 - zip_w/2])
  75                         rotate_extrude(convexity = 10) {
  76                                 translate([tube_d/2 + wall, 0, 0])
  77                                 square(size = [zip_h, zip_w]);
  78                         }
  79                 chamber();
  80                 // front hole
  81                 translate([tube_d/2 + wall + zip_h/2, 0, wall])
  82                         cube([top_led_h - wall - zip_h/2, tube_d, body_h]);
  83                 // LED hole
  84                 translate([tube_d/2+top_led_h+2*wall,1.5*wall, body_w/2-0.5])
  85                         rotate([-15, -65, 0])
  86                         cylinder(r = led_d/2, h = 10);
  87                 // cable hole
  88                 hull() {
  89                         translate([tube_d/2 + wall + zip_h/2, -10,
  90                                 body_w/2-zip_w/2])
  91                                 cube([cable_h, cable_w, eps]);
  92                         translate([tube_d/2, -10, -eps])
  93                                 cube([cable_h, cable_w, eps]);
  94                 }
  95         }
  96 }
  97
  98 holder();
  99