led-arrow.scad

   1 eps = 0.01;
   2 infty = 100;
   3
   4 module chamber() {
   5         hull() {
   6                 for (i = [-1, 1]) {
   7                         translate([-3, 0, 0.5])
   8                                 scale([1.25, 1, 1])
   9                                 cylinder(r1 = 8, r2 = 9, h = 4, $fn = 3);
  10                         rotate([0, 35*i, 0]) {
  11                                 translate([0, 0, 7])
  12                                 rotate([0, 0, 45])
  13                                 cylinder(r = 10/2, h = 4, $fn = 4);
  14                         }
  15                 }
  16         }
  17         for (i = [-1, 1]) {
  18                         rotate([0, 35*i, 0])
  19                                 translate([0, 0, 10])
  20                                         cylinder(r = 6.0/2, h = 5, $fn = 6);
  21                                 intersection() {
  22                                 rotate([0, 35*i, 0])
  23                                 translate([0, 0, 15-eps])
  24                                         cylinder(r = 8/2, h = 10, $fn = 6);
  25                                 translate([-30/2, -15/2, eps])
  26                                         cube([30, 15, 15]);
  27                                 }
  28                 difference() {
  29                         translate([-32/2, -16/2, 15])
  30                                 cube([32, 16, 20]);
  31
  32                         translate([screw_x-12/2, screw_y-12/2,0])
  33                                 cube([12, 12, infty]);
  34                 }
  35         }
  36
  37 }
  38
  39 screw_x = 5;
  40 screw_y = 11;
  41
  42 module body() {
  43         hull() {
  44                 // top cube
  45                 translate([-36/2, -20/2, 15])
  46                         cube([36, 20, 5]);
  47                 // bottom triangle
  48                 translate([-3, 0, 0])
  49                         scale([1.5, 1, 1])
  50                         cylinder(r = 11, h = eps, $fn = 3);
  51                 // screw base
  52                 translate([screw_x-12/2, screw_y-12/2,17])
  53                         cube([12, 12, 3]);
  54         }
  55 }
  56
  57 module light() {
  58         difference() {
  59                 body();
  60                 chamber();
  61                 // screw head hole
  62                 translate([-4+screw_x, screw_y-8/2, 17-infty])
  63                         cube([8, infty, infty]);
  64                 // screw hole
  65                 translate([screw_x-4, screw_y-4/2, -eps])
  66                         cube([8, 4, infty]);
  67
  68                 // cable hole
  69                 translate([-9-eps, 0, 17])
  70                         cube([8, infty, infty]);
  71
  72                 // debug
  73                 // translate([-infty/2, -infty, -infty/2]) cube(infty);
  74         }
  75 }
  76
  77 light();