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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 | |
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7 | $fn = 60; |
8 | |
9 | // 3/16 inch in mm deck_depth = 4.7625; |
10 | // 1/4 inch in mm - a little to be a squeeze fit |
11 | deck_depth = 6.35 - 0.4; |
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12 | sonar_plate_width = 20; |
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13 | // sonar sensor measurements taken with calipers: |
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14 | // 10.82 in between, 42.33 outside, 15.82 diameter |
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15 | // measured diameter of 15.82 with calipers, |
16 | // but when printed ends up being too small |
17 | sonar_sensor_radius = 15.82 / 2 + 0.3; |
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18 | sonar_sensor_height = 13.8; |
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19 | between_sensor_centers = 15.82 + 10.82; |
20 | sonar_plate_length = 3 + between_sensor_centers + sonar_sensor_radius + 3; |
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21 | sonar_holder_length = sonar_plate_length + 10; |
22 | sonar_holder_width = sonar_plate_width + 3; |
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23 | sonar_holder_depth = 4; |
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24 | |
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25 | deck_holder_length = 30; |
26 | deck_holder_width = sonar_holder_width; |
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27 | |
28 | module sensors(){ |
29 | translate([between_sensor_centers / 2, 0, 0]){ |
30 | cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);} |
31 | translate([-between_sensor_centers / 2, 0, 0]){ |
32 | cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}} |
33 | |
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34 | module sensor_holder(){ |
35 | difference(){ |
36 | cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]); |
37 | translate([sonar_holder_length / 2, sonar_holder_width / 2, -0.05]){ |
38 | sensors();}} |
39 | translate([sonar_holder_length, 0, 0]){ |
40 | cube([sonar_holder_depth + 0.3, deck_depth - 0.3, deck_depth - 0.3]); |
41 | translate([sonar_holder_depth + 0.3, 0, 0]){ |
42 | // subtract a little bit (0.3) to make it fit |
43 | cube([deck_depth - 0.3, sonar_holder_width, deck_depth - 0.3]);}}} |
44 | |
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45 | module deck_holder(){ |
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46 | cube([deck_holder_length, sonar_holder_depth, sonar_holder_width]); |
47 | cube([sonar_holder_depth, |
48 | sonar_holder_depth * 2 + deck_depth, |
49 | sonar_holder_width]); |
50 | translate([0, sonar_holder_depth + deck_depth, 0]){ |
51 | cube([deck_holder_length, sonar_holder_depth, sonar_holder_width]);} |
52 | translate([sonar_holder_depth + deck_depth, 0, 0]){ |
53 | cube([sonar_holder_depth, |
54 | sonar_holder_depth * 2 + deck_depth, |
55 | sonar_holder_width]);}} |
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56 | |
57 | module sonar_table_top_holder(){ |
58 | difference(){ |
59 | union(){ |
60 | cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]); |
61 | translate([sonar_holder_length, 0, 0]){ |
62 | deck_holder();}} |
63 | translate([between_sensor_centers / 2 + sonar_sensor_radius + 3, |
64 | sonar_holder_width / 2, |
65 | -1]){ |
66 | sensors();} |
67 | // cut out a bit of the circle to make it 3d printable, |
68 | // no severe overhang |
69 | translate([3 + sonar_sensor_radius, |
70 | sonar_holder_width - 3.025, |
71 | sonar_holder_depth / 2 - 0.025]){ |
72 | cube([10, 6.1, sonar_holder_depth + .1], center = true); |
73 | translate([between_sensor_centers, 0, 0]){ |
74 | cube([10, 6.1, sonar_holder_depth + .1], center = true);}}}} |
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75 | |
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76 | sensor_holder(); |