challenge-bot.com Git - challenge-bot/blob - schematic-3d-printable.scad

   1 // challenge-bot
   2 // GNU AGPLv3 (or later at your option)
   3 // project available at these locations:
   4 // https://gitorious.org/ozzloy/challenge-bot
   5 // https://github.com/waynegramlich/challenge-bot
   6
   7 // using
   8 // https://github.com/josefprusa/Prusa3/blob/master/box_frame/x-carriage.scad
   9 // as an example of how to code in scad
  10
  11 scale=10;
  12
  13 deck_width = 8;
  14 deck_length = 8;
  15 deck_depth = 3/16;
  16 deck_dimensions = [deck_width, deck_length, deck_depth];
  17
  18 module deck(scale){
  19   cube(deck_dimensions * scale, center = true);}
  20
  21 module collar_hole(scale){
  22   cylinder(h = 5/16 * scale, r = 0.362/2 * scale);}
  23
  24 module nubbin_hole(scale){
  25   cylinder(h = 5/16 * scale, r = 0.145/2 * scale);}
  26
  27 module mounting_screw_hole(scale){
  28   cylinder(h = 5/16 * scale, r = 0.114/2 * scale);}
  29
  30 module wheel_mount_reinforcement(scale){
  31   diagonal = sqrt(deck_depth * deck_depth + deck_depth * deck_depth);
  32   difference(){
  33     cube([deck_depth * 2, deck_depth * 2, deck_depth * 2] * scale);
  34     translate([-(diagonal - deck_depth) / 2, 0, 0] * scale)
  35       rotate([45, 0, 0])
  36         translate([0, -(diagonal * 1.1 - deck_depth) / 2, 0])
  37           cube([diagonal * 2, diagonal * 2 * 1.1, deck_depth * 2] * scale);}}
  38
  39 module wheel_motor_holes(scale){
  40   translate([0.5, 0.938, -1/16] * scale) {
  41     collar_hole(scale);}
  42   translate([0.5 + 0.875 - 0.425, 0.938, -1/16] * scale){
  43     nubbin_hole(scale);}
  44   translate([0.5 + 1.213 - 0.425, 0.938 - 0.687/2, -1/16] * scale){
  45     mounting_screw_hole(scale);}
  46   translate([0.5 + 1.213 - 0.425, 0.938 + 0.687/2, -1/16] * scale){
  47     mounting_screw_hole(scale);}}
  48
  49 module wheel_mount(scale){
  50   width = 1.5;
  51   length = 2;
  52   depth = deck_depth;
  53
  54   difference(){
  55     cube([width, length, depth] * scale);
  56     wheel_motor_holes(scale);}
  57   translate([2 * depth, 2 * depth, depth] * scale)
  58     rotate([0, 0, 180])
  59       wheel_mount_reinforcement(scale);
  60   translate([width, 2 * depth, depth] * scale)
  61     rotate([0, 0, 180])
  62       wheel_mount_reinforcement(scale);}
  63
  64 module robot(scale){
  65   translate([0, 0, (deck_depth)/2 * scale]){
  66     color("blue") deck(scale);
  67     translate([1.5, 4, (deck_depth)/2] * scale)
  68       rotate([90, 0, 0])
  69         wheel_mount(scale);
  70     mirror([0, 1, 0])
  71       translate([1.5, 4, (deck_depth)/2] * scale)
  72         rotate([90, 0, 0])
  73           wheel_mount(scale);}}
  74
  75 robot(scale);