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 sonar_binder_clip_holder_height
= 2;
41 module
sonar_sensors_2d(sonar_radius
,
42 between_sonar_centers
,
43 between_sonar_centers_variation
) {
46 translate([between_sonar_centers_variation
, 0]){
47 circle(sonar_radius
); } }
48 translate([between_sonar_centers
, 0]) {
49 circle(sonar_radius
); } }
51 module
sonar_holder_outline_2d(sonar_radius
,
52 between_sonar_centers
,
54 holder_radius
= sonar_radius
+ wall_thickness
;
55 holder_diameter
= holder_radius
* 2;
57 circle(holder_radius
);
58 translate([between_sonar_centers
- sonar_radius
- wall_thickness
,
60 square(holder_diameter
); } } }
62 module
sonar_holder_2d(sonar_radius
,
63 between_sonar_centers
,
64 between_sonar_centers_variation
,
67 sonar_holder_outline_2d(sonar_radius
,
68 between_sonar_centers
,
70 sonar_sensors_2d(sonar_radius
,
71 between_sonar_centers
,
72 between_sonar_centers_variation
); } }
74 module
binder_clip_holder_2d(binder_clip_holder_length
,
78 square([binder_clip_holder_length
, holder_radius
* 2]);
79 translate([binder_clip_holder_length
- holder_radius
, holder_radius
]) {
80 circle(screw_radius
); } } }
82 module
sonar_binder_clip_holder_2d(sonar_radius
,
83 between_sonar_centers
,
84 between_sonar_centers_variation
,
86 sonar_holder_2d(sonar_radius
,
87 between_sonar_centers
,
88 between_sonar_centers_variation
,
90 holder_radius
= sonar_radius
+ wall_thickness
;
91 binder_clip_holder_length
= 2 * holder_radius
;
92 translate([between_sonar_centers
+ holder_radius
, -holder_radius
]){
93 binder_clip_holder_2d(binder_clip_holder_length
,
97 module
sonar_binder_clip_holder(sonar_radius
,
98 between_sonar_centers
,
99 between_sonar_centers_variation
,
101 sonar_binder_clip_holder_height
) {
102 linear_extrude(height
= sonar_binder_clip_holder_height
) {
103 sonar_binder_clip_holder_2d(sonar_radius
,
104 between_sonar_centers
,
105 between_sonar_centers_variation
,
108 module
binder_clip_holder(binder_clip_holder_length
,
111 binder_clip_holder_height
) {
112 linear_extrude(height
= binder_clip_holder_height
) {
113 binder_clip_holder_2d(binder_clip_holder_length
,
118 This file is part of challenge-bot.
120 Challenge-bot is free software: you can redistribute it and/or modify
121 it under the terms of the GNU Affero General Public License as published by
122 the Free Software Foundation, either version 3 of the License, or
123 (at your option) any later version.
125 GNU Affero Emacs is distributed in the hope that it will be useful,
126 but WITHOUT ANY WARRANTY; without even the implied warranty of
127 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
128 GNU Affero General Public License for more details.
130 You should have received a copy of the GNU Affero General Public License
131 along with challenge-bot. If not, see <http://www.gnu.org/licenses/>.