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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; |
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10 | // 1/4 inch in mm = 6.35 |
11 | // subtract a little to be a squeeze fit |
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12 | deck_depth = 4.7625 - 0.4; |
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13 | sonar_plate_width = 20; |
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14 | // sonar sensor measurements taken with calipers: |
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15 | // 10.82 in between, 42.33 outside, 15.82 diameter |
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16 | // measured diameter of 15.82 with calipers, |
17 | // but when printed ends up being too small |
18 | sonar_sensor_radius = 15.82 / 2 + 0.3; |
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19 | sonar_sensor_height = 13.8; |
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20 | between_sensor_centers = sonar_sensor_radius * 2 + 10.82; |
21 | between_sensor_centers_variance = 2; |
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22 | sonar_plate_length = 3 + between_sensor_centers + sonar_sensor_radius + 3; |
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23 | sonar_holder_length = sonar_plate_length + 10; |
24 | sonar_holder_width = sonar_plate_width + 3; |
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25 | sonar_holder_depth = 4; |
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26 | |
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27 | deck_holder_length = 30; |
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28 | |
29 | module sensors(){ |
30 | translate([between_sensor_centers / 2, 0, 0]){ |
31 | cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);} |
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32 | translate([between_sensor_centers / 2 - between_sensor_centers_variance, |
33 | 0, |
34 | 0]){ |
35 | cylinder(r = sonar_sensor_radius, h = sonar_sensor_height); |
36 | translate([0, -sonar_sensor_radius, 0]){ |
37 | cube([between_sensor_centers_variance, |
38 | sonar_sensor_radius * 2, |
39 | sonar_sensor_height]);}} |
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40 | translate([-between_sensor_centers / 2, 0, 0]){ |
41 | cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}} |
42 | |
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43 | module sensor_holder(){ |
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44 | // arm_depth is deck_depth minus a little bit to make it fit |
45 | arm_depth = deck_depth - 0.7; |
46 | elbow_length = deck_depth + 0.8; |
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47 | difference(){ |
48 | cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]); |
49 | translate([sonar_holder_length / 2, sonar_holder_width / 2, -0.05]){ |
50 | sensors();}} |
51 | translate([sonar_holder_length, 0, 0]){ |
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52 | cube([elbow_length, deck_depth, arm_depth]); |
53 | translate([elbow_length, 0, 0]){ |
54 | linear_extrude(height = arm_depth){ |
55 | polygon([[0, 0], |
56 | [arm_depth, 0], |
57 | [arm_depth, sonar_holder_width / 2], |
58 | [0, sonar_holder_width / 2 + arm_depth]]);} |
59 | translate([0, (sonar_holder_width + arm_depth) / 2, 0]){ |
60 | cube([arm_depth / 2, |
61 | (sonar_holder_width - arm_depth) / 2 + 0.8, |
62 | arm_depth]);} |
63 | translate([-1.7, sonar_holder_width + 0.8, 0]){ |
64 | linear_extrude(height = arm_depth){ |
65 | polygon([[0, 0], |
66 | [arm_depth / 2 + 1.7, 4], |
67 | [arm_depth / 2 + 1.7, 0]]);}}}}} |
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68 | |
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69 | module deck_holder(){ |
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70 | deck_holder_width = sonar_holder_width - deck_depth; |
71 | cube([deck_holder_length, sonar_holder_depth, deck_holder_width]); |
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72 | cube([sonar_holder_depth, |
73 | sonar_holder_depth * 2 + deck_depth, |
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74 | deck_holder_width]); |
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75 | translate([0, sonar_holder_depth + deck_depth, 0]){ |
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76 | cube([deck_holder_length, sonar_holder_depth, deck_holder_width]);} |
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77 | translate([sonar_holder_depth + deck_depth, 0, 0]){ |
78 | cube([sonar_holder_depth, |
79 | sonar_holder_depth * 2 + deck_depth, |
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80 | deck_holder_width]);}} |
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81 | |
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82 | translate([0, sonar_holder_depth * 2 + deck_depth + 2, 0]){ |
83 | sensor_holder();} |
84 | deck_holder(); |