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
20 * * TODO make hole for thing between cans
21 * * TODO make hole for screws in corners of pcb
26 sonar_diameter_measured
= 15.82;
27 sonar_diameter_print_fudge
= 0.4;
28 sonar_diameter
= sonar_diameter_measured
+ sonar_diameter_print_fudge
;
29 sonar_radius
= sonar_diameter
/ 2;
31 between_sonar_cans
= 10.82;
32 between_sonar_centers
= sonar_diameter
+ between_sonar_cans
;
34 // the sonar cylinders are placed on the pcb at slightly different positions
35 // from one sensor to the next, so this allows for that variance.
36 between_sonar_centers_variation
= 2;
40 screw_diameter_measured
= 3.45;
41 screw_radius_measured
= screw_diameter_measured
/ 2;
42 screw_radius_print_fudge
= 0.3;
43 screw_radius
= screw_radius_measured
+ screw_radius_print_fudge
;
45 sonar_binder_clip_holder_height
= 4;
47 module
sonar_sensor_holes_2d(sonar_radius
,
48 between_sonar_centers
,
49 between_sonar_centers_variation
) {
52 translate([between_sonar_centers_variation
, 0]){
53 circle(sonar_radius
); } }
54 translate([between_sonar_centers
, 0]) {
55 circle(sonar_radius
); } }
57 module
sonar_holder_outline_2d(holder_radius
,
58 between_sonar_centers
) {
60 circle(holder_radius
);
61 translate([between_sonar_centers
, 0]) {
62 circle(holder_radius
); } } }
64 module
binder_clip_holder_outline_2d(holder_radius
) {
65 circle(holder_radius
); }
67 module
sonar_binder_clip_holder_outline_2d(holder_radius
,
68 between_sonar_centers
) {
69 sonar_holder_length
= between_sonar_centers
+ 2 * holder_radius
;
71 sonar_holder_outline_2d(holder_radius
, between_sonar_centers
);
72 translate([sonar_holder_length
, 0]) {
73 binder_clip_holder_outline_2d(holder_radius
); } } }
75 module
binder_clip_holder_holes_2d(screw_radius
) {
76 circle(screw_radius
); }
78 module
binder_clip_holder_2d(holder_radius
,
81 binder_clip_holder_outline_2d(holder_radius
);
82 binder_clip_holder_holes_2d(screw_radius
); } }
84 module
binder_clip_holder(holder_radius
,
86 sonar_binder_clip_holder_height
) {
87 linear_extrude(height
= sonar_binder_clip_holder_height
) {
88 binder_clip_holder_2d(holder_radius
,
91 module
sonar_binder_clip_holder_holes_2d(sonar_radius
,
92 between_sonar_centers
,
93 between_sonar_centers_variation
,
96 holder_radius
= sonar_radius
+ wall_thickness
;
97 holder_diameter
= holder_radius
* 2;
98 holder_length
= between_sonar_centers
+ holder_diameter
;
99 sonar_sensor_holes_2d(sonar_radius
,
100 between_sonar_centers
,
101 between_sonar_centers_variation
);
102 translate([holder_length
, 0]){
103 binder_clip_holder_holes_2d(screw_radius
); } }
105 module
sonar_binder_clip_holder_2d(sonar_radius
,
106 between_sonar_centers
,
107 between_sonar_centers_variation
,
110 holder_radius
= sonar_radius
+ wall_thickness
;
112 sonar_binder_clip_holder_outline_2d(holder_radius
,
113 between_sonar_centers
);
114 sonar_binder_clip_holder_holes_2d(sonar_radius
,
115 between_sonar_centers
,
116 between_sonar_centers_variation
,
120 module
sonar_binder_clip_holder(sonar_radius
,
121 between_sonar_centers
,
122 between_sonar_centers_variation
,
125 sonar_binder_clip_holder_height
) {
126 linear_extrude(height
= sonar_binder_clip_holder_height
) {
127 sonar_binder_clip_holder_2d(sonar_radius
,
128 between_sonar_centers
,
129 between_sonar_centers_variation
,
134 This file is part of challenge-bot.
136 Challenge-bot is free software: you can redistribute it and/or modify
137 it under the terms of the GNU Affero General Public License as published by
138 the Free Software Foundation, either version 3 of the License, or
139 (at your option) any later version.
141 GNU Affero Emacs is distributed in the hope that it will be useful,
142 but WITHOUT ANY WARRANTY; without even the implied warranty of
143 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
144 GNU Affero General Public License for more details.
146 You should have received a copy of the GNU Affero General Public License
147 along with challenge-bot. If not, see <http://www.gnu.org/licenses/>.