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 = 150;
  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_diameter_measured = 3.45;
  36 screw_radius_measured = screw_diameter_measured / 2;
  37 screw_radius_print_fudge = 0.3;
  38 screw_radius = screw_radius_measured + screw_radius_print_fudge;
  39
  40 sonar_binder_clip_holder_height = 4;
  41
  42 module sonar_sensor_holes_2d(sonar_radius,
  43                              between_sonar_centers,
  44                              between_sonar_centers_variation) {
  45   hull(){
  46     circle(sonar_radius);
  47     translate([between_sonar_centers_variation, 0]){
  48       circle(sonar_radius); } }
  49   translate([between_sonar_centers, 0]) {
  50     circle(sonar_radius); } }
  51
  52 module sonar_holder_outline_2d(holder_radius,
  53                                between_sonar_centers) {
  54   hull() {
  55     circle(holder_radius);
  56     translate([between_sonar_centers, 0]) {
  57       circle(holder_radius); } } }
  58
  59 module binder_clip_holder_outline_2d(holder_radius) {
  60      circle(holder_radius); }
  61
  62 module sonar_binder_clip_holder_outline_2d(holder_radius,
  63                                            between_sonar_centers) {
  64   sonar_holder_length = between_sonar_centers + 2 * holder_radius;
  65   hull(){
  66     sonar_holder_outline_2d(holder_radius, between_sonar_centers);
  67     translate([sonar_holder_length, 0]) {
  68       binder_clip_holder_outline_2d(holder_radius); } } }
  69
  70 module binder_clip_holder_holes_2d(screw_radius) {
  71   circle(screw_radius); }
  72
  73 module binder_clip_holder_2d(holder_radius,
  74                              screw_radius) {
  75   difference() {
  76        binder_clip_holder_outline_2d(holder_radius);
  77        binder_clip_holder_holes_2d(screw_radius); } }
  78
  79 module binder_clip_holder(holder_radius,
  80                           screw_radius,
  81                           sonar_binder_clip_holder_height) {
  82   linear_extrude(height = sonar_binder_clip_holder_height) {
  83     binder_clip_holder_2d(holder_radius,
  84                           screw_radius); } }
  85
  86 module sonar_binder_clip_holder_holes_2d(sonar_radius,
  87                                          between_sonar_centers,
  88                                          between_sonar_centers_variation,
  89                                          screw_radius,
  90                                          wall_thickness) {
  91   holder_radius = sonar_radius + wall_thickness;
  92   holder_diameter = holder_radius * 2;
  93   holder_length = between_sonar_centers + holder_diameter;
  94   sonar_sensor_holes_2d(sonar_radius,
  95                         between_sonar_centers,
  96                         between_sonar_centers_variation);
  97   translate([holder_length, 0]){
  98     binder_clip_holder_holes_2d(screw_radius); } }
  99
 100 module sonar_binder_clip_holder_2d(sonar_radius,
 101                                    between_sonar_centers,
 102                                    between_sonar_centers_variation,
 103                                    screw_radius,
 104                                    wall_thickness) {
 105   holder_radius = sonar_radius + wall_thickness;
 106   difference() {
 107     sonar_binder_clip_holder_outline_2d(holder_radius,
 108                                         between_sonar_centers);
 109     sonar_binder_clip_holder_holes_2d(sonar_radius,
 110                                       between_sonar_centers,
 111                                       between_sonar_centers_variation,
 112                                       screw_radius,
 113                                       wall_thickness); } }
 114
 115 module sonar_binder_clip_holder(sonar_radius,
 116                                 between_sonar_centers,
 117                                 between_sonar_centers_variation,
 118                                 screw_radius,
 119                                 wall_thickness,
 120                                 sonar_binder_clip_holder_height) {
 121      linear_extrude(height = sonar_binder_clip_holder_height) {
 122           sonar_binder_clip_holder_2d(sonar_radius,
 123                                       between_sonar_centers,
 124                                       between_sonar_centers_variation,
 125                                       screw_radius,
 126                                       wall_thickness); } }
 127
 128 /*
 129   This file is part of challenge-bot.
 130
 131   Challenge-bot is free software: you can redistribute it and/or modify
 132   it under the terms of the GNU Affero General Public License as published by
 133   the Free Software Foundation, either version 3 of the License, or
 134   (at your option) any later version.
 135
 136   GNU Affero Emacs is distributed in the hope that it will be useful,
 137   but WITHOUT ANY WARRANTY; without even the implied warranty of
 138   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 139   GNU Affero General Public License for more details.
 140
 141   You should have received a copy of the GNU Affero General Public License
 142   along with challenge-bot.  If not, see <http://www.gnu.org/licenses/>.
 143 */