| 1 | // Simple button cell battery holder |
| 2 | // Created 2017 Clinton Ebadi <clinton@unknownlamer.org> |
| 3 | |
| 4 | // Released under the https://wiki.creativecommons.org/wiki/CC0 |
| 5 | // To the extent possible under law, Clinton Ebadi has waived all |
| 6 | // copyright and related or neighboring rights to simple button cell |
| 7 | // battery holder. |
| 8 | |
| 9 | // Defaults have no tolerance, should be printed using flexible |
| 10 | // filament for a snug fit |
| 11 | |
| 12 | module holder (battery_d = 20, battery_h = 3.2, case_wall = 1.7, slot_undersize = 0.4, wire_d = 1.2, cover_pct = 0.4) { |
| 13 | battery_h = battery_h - slot_undersize; |
| 14 | |
| 15 | case_d = battery_d + case_wall*2; |
| 16 | case_h = battery_h + case_wall*2; |
| 17 | |
| 18 | %cylinder (d= battery_d, h = battery_h, center = true); |
| 19 | |
| 20 | difference () { |
| 21 | cylinder (d = case_d, h = case_h, center = true); |
| 22 | cylinder (d= battery_d, h = battery_h, center = true); |
| 23 | |
| 24 | // only cover cover_pct% |
| 25 | translate ([-case_d/2 + case_d*cover_pct, -case_d/2, -case_h/2 - 0.01]) cube ([case_d, case_d, case_h + 0.02]); |
| 26 | |
| 27 | // slots for wires |
| 28 | hook_distance = -case_d/2 + case_d*cover_pct/2; // fixme: shitty name |
| 29 | for (z = [-battery_h/2, battery_h/2]) { |
| 30 | //#translate ([-case_d/2 - 0.01, 0, z]) rotate ([0, 90, 0]) cylinder (h = case_d, d = wire_d); |
| 31 | #translate ([-case_d/2 - 0.01, 0, z]) rotate ([0, 90, 0]) cylinder (h = case_d * cover_pct/2, d = wire_d); |
| 32 | } |
| 33 | |
| 34 | // hole to bend wire up to hold in place |
| 35 | translate ([hook_distance, 0, 0]) cylinder (h = case_h + 1, d = wire_d, center = true); |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | holder ($fs = 0.1, $fa = 1, slot_undersize = 0.4); |