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 wall_thickness = 3;
  34
  35 screw_radius_measured = 2.8;
  36 screw_radius_print_fudge = 0.3;
  37 screw_radius = screw_radius_measured + screw_radius_print_fudge;
  38
  39 sonar_binder_clip_holder_height = 4;
  40
  41 module sonar_sensor_holes_2d(sonar_radius,
  42                              between_sonar_centers,
  43                              between_sonar_centers_variation) {
  44   hull(){
  45     circle(sonar_radius);
  46     translate([between_sonar_centers_variation, 0]){
  47       circle(sonar_radius); } }
  48   translate([between_sonar_centers, 0]) {
  49     circle(sonar_radius); } }
  50
  51 module sonar_holder_outline_2d(holder_radius,
  52                                between_sonar_centers) {
  53   hull() {
  54     circle(holder_radius);
  55     translate([between_sonar_centers, 0]) {
  56       circle(holder_radius); } } }
  57
  58 module binder_clip_holder_outline_2d(holder_radius) {
  59      circle(holder_radius); }
  60
  61 module sonar_binder_clip_holder_outline_2d(holder_radius,
  62                                            between_sonar_centers) {
  63   sonar_holder_length = between_sonar_centers + 2 * holder_radius;
  64   hull(){
  65     sonar_holder_outline_2d(holder_radius, between_sonar_centers);
  66     translate([sonar_holder_length, 0]) {
  67       binder_clip_holder_outline_2d(holder_radius); } } }
  68
  69 module binder_clip_holder_holes_2d(screw_radius) {
  70   circle(screw_radius); }
  71
  72 module binder_clip_holder_2d(holder_radius,
  73                              screw_radius) {
  74   difference() {
  75        binder_clip_holder_outline_2d(holder_radius);
  76        binder_clip_holder_holes_2d(screw_radius); } }
  77
  78 module binder_clip_holder(holder_radius,
  79                           screw_radius,
  80                           sonar_binder_clip_holder_height) {
  81   linear_extrude(height = sonar_binder_clip_holder_height) {
  82     binder_clip_holder_2d(holder_radius,
  83                           screw_radius); } }
  84
  85 module sonar_binder_clip_holder_holes_2d(sonar_radius,
  86                                          between_sonar_centers,
  87                                          between_sonar_centers_variation,
  88                                          screw_radius,
  89                                          wall_thickness) {
  90   holder_radius = sonar_radius + wall_thickness;
  91   holder_diameter = holder_radius * 2;
  92   holder_length = between_sonar_centers + holder_diameter;
  93   sonar_sensor_holes_2d(sonar_radius,
  94                         between_sonar_centers,
  95                         between_sonar_centers_variation);
  96   translate([holder_length, 0]){
  97     binder_clip_holder_holes_2d(screw_radius); } }
  98
  99 module sonar_binder_clip_holder_2d(sonar_radius,
 100                                    between_sonar_centers,
 101                                    between_sonar_centers_variation,
 102                                    screw_radius,
 103                                    wall_thickness) {
 104   holder_radius = sonar_radius + wall_thickness;
 105   difference() {
 106     sonar_binder_clip_holder_outline_2d(holder_radius,
 107                                         between_sonar_centers);
 108     sonar_binder_clip_holder_holes_2d(sonar_radius,
 109                                       between_sonar_centers,
 110                                       between_sonar_centers_variation,
 111                                       screw_radius,
 112                                       wall_thickness); } }
 113
 114 module sonar_binder_clip_holder(sonar_radius,
 115                                 between_sonar_centers,
 116                                 between_sonar_centers_variation,
 117                                 screw_radius,
 118                                 wall_thickness,
 119                                 sonar_binder_clip_holder_height) {
 120      linear_extrude(height = sonar_binder_clip_holder_height) {
 121           sonar_binder_clip_holder_2d(sonar_radius,
 122                                       between_sonar_centers,
 123                                       between_sonar_centers_variation,
 124                                       screw_radius,
 125                                       wall_thickness); } }
 126
 127 /*
 128   This file is part of challenge-bot.
 129
 130   Challenge-bot is free software: you can redistribute it and/or modify
 131   it under the terms of the GNU Affero General Public License as published by
 132   the Free Software Foundation, either version 3 of the License, or
 133   (at your option) any later version.
 134
 135   GNU Affero Emacs is distributed in the hope that it will be useful,
 136   but WITHOUT ANY WARRANTY; without even the implied warranty of
 137   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 138   GNU Affero General Public License for more details.
 139
 140   You should have received a copy of the GNU Affero General Public License
 141   along with challenge-bot.  If not, see <http://www.gnu.org/licenses/>.
 142 */