2 Copyright 2016 Daniel Watson
3 See the end of the file for license conditions.
6 // GNU AGPLv3 (or later at your option)
7 // project available here:
8 // https://challenge-bot.com/ */
11 this holds an hc-sr04 sonar sensor to a 3/16 inch deck.
12 http://fritzing.org/projects/hc-sr04-project
13 it can hold the sonar sensor either facing down, or forwards.
14 when facing down, it can detect if it passes over the edge of a table.
15 when facing forwards, it can detect and follow something in front
21 sonar_diameter_measured
= 15.82;
22 sonar_diameter_print_fudge
= 0.5;
23 sonar_diameter
= sonar_diameter_measured
+ sonar_diameter_print_fudge
;
24 sonar_radius
= sonar_diameter
/ 2;
26 between_sonar_cans
= 10.82;
27 between_sonar_centers
= sonar_diameter
+ between_sonar_cans
;
29 // the sonar cylinders are placed on the pcb at slightly different positions
30 // from one sensor to the next, so this allows for that variance.
31 between_sonar_centers_variation
= 2;
35 screw_radius_measured
= 2.8;
36 screw_radius_print_fudge
= 0.3;
37 screw_radius
= screw_radius_measured
+ screw_radius_print_fudge
;
39 module
sonar_sensors_2d(sonar_radius
,
40 between_sonar_centers
,
41 between_sonar_centers_variation
) {
44 translate([between_sonar_centers_variation
, 0]){
45 circle(sonar_radius
); } }
46 translate([between_sonar_centers
, 0]) {
47 circle(sonar_radius
); } }
49 module
sonar_holder_outline_2d(sonar_radius
,
50 between_sonar_centers
,
52 holder_radius
= sonar_radius
+ wall_thickness
;
53 holder_diameter
= holder_radius
* 2;
55 circle(holder_radius
);
56 translate([between_sonar_centers
, 0]) {
57 circle(holder_radius
); }
58 translate([sonar_radius
+ between_sonar_centers
, -holder_radius
]) {
59 square([holder_diameter
* 2, holder_diameter
]); } } }
61 module
sonar_binder_clip_holder(sonar_radius
,
62 between_sonar_centers
,
63 between_sonar_centers_variation
,
66 sonar_holder_outline_2d(sonar_radius
,
67 between_sonar_centers
,
69 sonar_sensors_2d(sonar_radius
,
70 between_sonar_centers
,
71 between_sonar_centers_variation
);
72 translate([sonar_radius
+
73 between_sonar_centers
+
74 3 * (wall_thickness
+ sonar_radius
),
77 circle(screw_radius
); } } }
80 This file is part of challenge-bot.
82 Challenge-bot is free software: you can redistribute it and/or modify
83 it under the terms of the GNU Affero General Public License as published by
84 the Free Software Foundation, either version 3 of the License, or
85 (at your option) any later version.
87 GNU Affero Emacs is distributed in the hope that it will be useful,
88 but WITHOUT ANY WARRANTY; without even the implied warranty of
89 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
90 GNU Affero General Public License for more details.
92 You should have received a copy of the GNU Affero General Public License
93 along with challenge-bot. If not, see <http://www.gnu.org/licenses/>.