| df8e764d |
1 | /* GNU AGPLv3 (or later at your option) |
| 2 | see bottom for more license info */ |
| 3 | |
| 4 | /* protective housing for crazyflie 2.0. |
| 5 | |
| 6 | reinforce the arms so they do not snap. |
| 7 | |
| 8 | keep the props up high so they do not get hairs from the ground |
| 9 | wrapped around the motor shaft. |
| 10 | */ |
| 11 | |
| eace0c6c |
12 | $fn = 300; |
| df8e764d |
13 | |
| eace0c6c |
14 | // propeller diameter was measured with calipers |
| 15 | propeller_radius = 46.35 / 2; |
| 16 | // 7mm from spec |
| 17 | motor_grippable_height = 8; |
| 18 | motor_gripper_height = motor_grippable_height / 2; |
| 19 | holder_height = motor_grippable_height * 1.1; |
| df8e764d |
20 | |
| eace0c6c |
21 | propeller_radius_measured = 46.35 / 2; |
| 22 | holder_wall_thickness = 1.2; |
| 23 | propeller_guard_wall_thickness = 1.2; |
| b2b49e2c |
24 | |
| eace0c6c |
25 | motor_diameter = 7; |
| 26 | motor_height_measured = 17; |
| 27 | motor_radius = motor_diameter / 2; |
| b2b49e2c |
28 | |
| eace0c6c |
29 | module propeller_protector(motor_radius, |
| 30 | holder_wall_thickness, |
| 31 | propeller_guard_wall_thickness, |
| 32 | motor_gripper_height, |
| 33 | holder_height, |
| 34 | propeller_radius) { |
| 35 | propeller_guard_inner_radius = propeller_radius + 1.5; |
| 36 | holder_outer_radius = motor_radius + holder_wall_thickness; |
| 37 | number_of_arms = 3; |
| 38 | linear_extrude(height = motor_gripper_height) { |
| 39 | // part that holds the motor |
| 40 | difference() { |
| 41 | circle(r = holder_outer_radius); |
| 42 | circle(r = motor_radius); } |
| 43 | for(arm_number = [0: (number_of_arms - 1)]) { |
| 44 | rotate(arm_number * (360 / number_of_arms)) { |
| 45 | translate([-propeller_guard_inner_radius, |
| 46 | -holder_wall_thickness / 2]) { |
| 47 | square([propeller_guard_inner_radius - motor_radius, |
| 48 | holder_wall_thickness]); } } } } |
| 49 | // prop protector |
| 50 | linear_extrude(height = holder_height) { |
| 51 | difference() { |
| 52 | circle(propeller_guard_inner_radius + |
| 53 | propeller_guard_wall_thickness); |
| 54 | circle(propeller_guard_inner_radius); } } } |
| cfa97e05 |
55 | |
| eace0c6c |
56 | propeller_protector(motor_radius, |
| 57 | holder_wall_thickness, |
| 58 | propeller_guard_wall_thickness, |
| 59 | motor_gripper_height, |
| 60 | holder_height, |
| 61 | propeller_radius_measured); |
| df8e764d |
62 | |
| 63 | /* |
| 64 | This file is part of 3d-printables. |
| 65 | |
| 66 | 3d-printables is free software: you can redistribute it and/or modify |
| 67 | it under the terms of the GNU Affero General Public License as published by |
| 68 | the Free Software Foundation, either version 3 of the License, or |
| 69 | (at your option) any later version. |
| 70 | |
| 71 | 3d-printables is distributed in the hope that it will be useful, |
| 72 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 73 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 74 | GNU Affero General Public License for more details. |
| 75 | |
| 76 | You should have received a copy of the GNU Affero General Public License |
| 77 | along with challenge-bot. If not, see <http://www.gnu.org/licenses/>. |
| 78 | */ |
projects / ozzloy@gmail.com / 3d-printables / blame