challenge-bot.com Git - challenge-bot/blob - 3d-printables/sonar-binder-clip-holder-data.scad

   1 /*
   2   Copyright 2016 Daniel Watson
   3   See the end of the file for license conditions.
   4 */
   5 /* challenge-bot
   6 // GNU AGPLv3 (or later at your option)
   7 // project available here:
   8 // https://challenge-bot.com/ */
   9
  10 /*
  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
  16   of it.
  17 */
  18
  19 $fn = 50;
  20
  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;
  25
  26 between_sonar_cans = 10.82;
  27 between_sonar_centers = sonar_diameter + between_sonar_cans;
  28
  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;
  32
  33 module sonar_binder_clip_holder(sonar_radius,
  34                                                                                                                                 between_sonar_centers,
  35                                                                                                                                 between_sonar_centers_variation) {
  36         hull(){
  37                 circle(sonar_radius);
  38                 translate([between_sonar_centers_variation, 0]){
  39                         circle(sonar_radius); } }
  40         translate([between_sonar_centers, 0]) {
  41                 circle(sonar_radius); } }
  42
  43 /*
  44   This file is part of challenge-bot.
  45
  46   Challenge-bot is free software: you can redistribute it and/or modify
  47   it under the terms of the GNU Affero General Public License as published by
  48   the Free Software Foundation, either version 3 of the License, or
  49   (at your option) any later version.
  50
  51   GNU Affero Emacs is distributed in the hope that it will be useful,
  52   but WITHOUT ANY WARRANTY; without even the implied warranty of
  53   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  54   GNU Affero General Public License for more details.
  55
  56   You should have received a copy of the GNU Affero General Public License
  57   along with challenge-bot.  If not, see <http://www.gnu.org/licenses/>.
  58 */