| 1 | // challenge-bot phase-2 |
| 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_mount(scale){ |
| 40 | difference(){ |
| 41 | cube([1.5, 2, 3/16] * scale); |
| 42 | // motor shaft collar hole |
| 43 | translate([0.5, 0.938, -1/16] * scale) { |
| 44 | collar_hole(scale);} |
| 45 | // nubbin hole |
| 46 | translate([0.5 + 0.875 - 0.425, 0.938, -1/16] * scale){ |
| 47 | nubbin_hole(scale);} |
| 48 | // mounting screw hole |
| 49 | translate([0.5 + 1.213 - 0.425, 0.938 - 0.687/2, -1/16] * scale){ |
| 50 | mounting_screw_hole(scale);} |
| 51 | translate([0.5 + 1.213 - 0.425, 0.938 + 0.687/2, -1/16] * scale){ |
| 52 | mounting_screw_hole(scale);}}} |
| 53 | |
| 54 | translate([0, 0, (3/16)/2 * scale]){ |
| 55 | color("blue") deck(scale); |
| 56 | rotate([90, 0, 0]) |
| 57 | translate([1.5, (deck_depth)/2, -4] * scale) wheel_mount(scale); |
| 58 | rotate([90, 0, 0]) |
| 59 | translate([1.5, (deck_depth)/2, 4 - deck_depth] * scale) |
| 60 | wheel_mount(scale);} |
| 61 | |
| 62 | translate([1.5, deck_length/2 - deck_depth * 3, deck_depth] * scale){ |
| 63 | wheel_mount_reinforcement(scale);} |
| 64 | translate([1.5 * 2 - deck_depth * 2, |
| 65 | deck_length / 2 - deck_depth * 3, |
| 66 | deck_depth] |
| 67 | * scale){ |
| 68 | wheel_mount_reinforcement(scale);} |
| 69 | |
| 70 | translate([1.5 + deck_depth * 2, |
| 71 | 3 * deck_depth - deck_length / 2, |
| 72 | deck_depth] |
| 73 | * scale){ |
| 74 | rotate([0, 0, 180]){ |
| 75 | wheel_mount_reinforcement(scale);}} |
| 76 | translate([1.5 * 2, 3 * deck_depth - deck_length / 2, deck_depth] * scale){ |
| 77 | rotate([0, 0, 180]){ |
| 78 | wheel_mount_reinforcement(scale);}} |