make oshw logo stick out a little more

[challenge-bot] / 3d-printables / deck-holder-data.scad

/*
  Copyright (C) 2015 Daniel Watson
  See the end of the file for license conditions.
*/
// challenge-bot
// GNU AGPLv3 (or later at your option)
// project available here:
// https://challenge-bot.com/

/*
  this holds an hc-sr04 sonar sensor to a 3/16 inch deck.
  http://fritzing.org/projects/hc-sr04-project
  it can hold the sonar sensor either facing down, or forwards.
  when facing down, it can detect if it passes over the edge of a table.
  when facing forwards, it can detect and follow something in front of it.
 */

$fn = 60;

include <oshw-data.scad>

// 3/16 inch in mm deck_depth = 4.7625;
// 1/4 inch in mm = 6.35
// subtract a little to be a squeeze fit
deck_depth = 4.7625 - 0.4;
// sonar sensor measurements taken with calipers:
//  10.82 in between, 42.33 outside, 15.82 diameter
// measured diameter of 15.82 with calipers,
//  but when printed ends up being too small, so add some
sonar_diameter = 15.82 + 0.4;
sonar_radius = sonar_diameter / 2;
sonar_height = 13.8;
between_sonar_centers = sonar_diameter + 10.82;
// the sonar cylinders are placed on the pcb at slightly different positions
//  from one sensor to the next, so this allows for that variance.
between_sonar_centers_variance = 2;
// keep at least this much plastic surrounding the sonar cylinder on all sides
buffer = 3;
sonar_holder_length = buffer + between_sonar_centers + sonar_diameter + buffer;
sonar_holder_width = buffer + sonar_diameter + buffer;

// sonar_holder_depth is deck_depth minus a little bit to make arm fit
//  into deck holder
sonar_holder_depth = deck_depth - 0.7875;

deck_holder_length = sonar_holder_depth * 2 + deck_depth + 15;

module deck_holder() {
  oshw_height = 0.75;
  deck_holder_width = sonar_holder_width - deck_depth;
  deck_holder_height = sonar_holder_depth * 2 + deck_depth;
  linear_extrude(height = deck_holder_width) {
    difference() {
      square([deck_holder_length, deck_holder_height]);
      translate([sonar_holder_depth - 0.15, sonar_holder_depth - 0.15]) {

/*
  This file is part of challenge-bot.

  Challenge-bot is free software: you can redistribute it and/or modify
  it under the terms of the GNU Affero General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  GNU Affero Emacs is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License
  along with challenge-bot.  If not, see <http://www.gnu.org/licenses/>.
*/
        square(deck_depth + 0.3); }
      translate([deck_holder_height, sonar_holder_depth - 0.3]) {
        square([deck_holder_length - (deck_holder_height),
                deck_depth + 0.6]); } } }
  translate([deck_holder_length - oshw_dy * 0.05, 0, deck_holder_width / 2])
  scale([0.1, 1, 0.1])
  rotate(v = [1, 0, 0], a = 90)
  rotate(90)
  linear_extrude(height = 0.5)
  oshw();
  translate([deck_holder_length - oshw_dy * 0.05,
             deck_holder_height + 0.5,
             deck_holder_width / 2])
  rotate(v = [1, 0, 0], a = 90)
  rotate(90)
  scale([0.1, 0.1, 1])
  linear_extrude(height = 0.5)
  oshw(); }