challenge-bot.com Git - challenge-bot/blob - 3d-printables/deck-holder-data.scad

   1 /*
   2   Copyright (C) 2015 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 of it.
  16  */
  17
  18 $fn = 60;
  19
  20 include <oshw-data.scad>
  21
  22 // 3/16 inch in mm deck_depth = 4.7625;
  23 // 1/4 inch in mm = 6.35
  24 // subtract a little to be a squeeze fit
  25 deck_depth = 4.7625 - 0.4;
  26 // sonar sensor measurements taken with calipers:
  27 //  10.82 in between, 42.33 outside, 15.82 diameter
  28 // measured diameter of 15.82 with calipers,
  29 //  but when printed ends up being too small, so add some
  30 sonar_diameter = 15.82 + 0.4;
  31 sonar_radius = sonar_diameter / 2;
  32 sonar_height = 13.8;
  33 between_sonar_centers = sonar_diameter + 10.82;
  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_variance = 2;
  37 // keep at least this much plastic surrounding the sonar cylinder on all sides
  38 buffer = 3;
  39 sonar_holder_length = buffer + between_sonar_centers + sonar_diameter + buffer;
  40 sonar_holder_width = buffer + sonar_diameter + buffer;
  41
  42 // 3/16 inch in mm deck_depth = 4.7625;
  43 // 1/4 inch in mm = 6.35
  44 // subtract a little to be a squeeze fit
  45 deck_depth = 4.7625 - 0.4;
  46 // sonar sensor measurements taken with calipers:
  47 //  10.82 in between, 42.33 outside, 15.82 diameter
  48 // measured diameter of 15.82 with calipers,
  49 //  but when printed ends up being too small, so add some
  50 sonar_diameter = 15.82 + 0.4;
  51 sonar_radius = sonar_diameter / 2;
  52 sonar_height = 13.8;
  53 between_sonar_centers = sonar_diameter + 10.82;
  54 // the sonar cylinders are placed on the pcb at slightly different positions
  55 //  from one sensor to the next, so this allows for that variance.
  56 between_sonar_centers_variance = 2;
  57 // keep at least this much plastic surrounding the sonar cylinder on all sides
  58 buffer = 3;
  59 sonar_holder_length = buffer + between_sonar_centers + sonar_diameter + buffer;
  60 sonar_holder_width = buffer + sonar_diameter + buffer;
  61 // sonar_holder_depth is deck_depth minus a little bit to make arm fit
  62 //  into deck holder
  63 sonar_holder_depth = deck_depth - 0.7875;
  64
  65 deck_holder_length = sonar_holder_depth * 2 + deck_depth + 15;
  66
  67 module deck_holder() {
  68   deck_holder_width = sonar_holder_width - deck_depth;
  69   deck_holder_height = sonar_holder_depth * 2 + deck_depth;
  70   linear_extrude(height = deck_holder_width) {
  71     difference() {
  72       square([deck_holder_length, deck_holder_height]);
  73       translate([sonar_holder_depth - 0.15, sonar_holder_depth - 0.15]) {
  74
  75 /*
  76   This file is part of challenge-bot.
  77
  78   Challenge-bot is free software: you can redistribute it and/or modify
  79   it under the terms of the GNU Affero General Public License as published by
  80   the Free Software Foundation, either version 3 of the License, or
  81   (at your option) any later version.
  82
  83   GNU Affero Emacs is distributed in the hope that it will be useful,
  84   but WITHOUT ANY WARRANTY; without even the implied warranty of
  85   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  86   GNU Affero General Public License for more details.
  87
  88   You should have received a copy of the GNU Affero General Public License
  89   along with challenge-bot.  If not, see <http://www.gnu.org/licenses/>.
  90 */
  91         square(deck_depth + 0.3); }
  92       translate([deck_holder_height, sonar_holder_depth - 0.3]) {
  93         square([deck_holder_length - (deck_holder_height),
  94                 deck_depth + 0.6]); } } }
  95   translate([deck_holder_length - oshw_dy * 0.05, 0, deck_holder_width / 2])
  96   scale([0.1, 1, 0.1])
  97   rotate(v = [1, 0, 0], a = 90)
  98   rotate(90)
  99   linear_extrude(height = 0.5)
 100   oshw();
 101   translate([deck_holder_length - oshw_dy * 0.05,
 102              deck_holder_height + 0.5,
 103              deck_holder_width / 2])
 104   rotate(v = [1, 0, 0], a = 90)
 105   rotate(90)
 106   scale([0.1, 0.1, 1])
 107   linear_extrude(height = 0.5)
 108   oshw(); }