X-Git-Url: http://challenge-bot.com/repos/?a=blobdiff_plain;f=3d-printables%2Fsonar-table-top-holder.scad;h=7834bc623237994e863ad6f38dbfcab29e3841c1;hb=cb533ee56e22ec657437b5672be54a40870cd757;hp=d34c694c7c675f18516a3c0c345b81c63cb52878;hpb=8b84f6f3989f657fd317184d16ecf8a72555253b;p=challenge-bot diff --git a/3d-printables/sonar-table-top-holder.scad b/3d-printables/sonar-table-top-holder.scad index d34c694..7834bc6 100644 --- a/3d-printables/sonar-table-top-holder.scad +++ b/3d-printables/sonar-table-top-holder.scad @@ -1,84 +1,39 @@ +/* + 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 at these locations: -// https://gitorious.org/ozzloy/challenge-bot -// https://github.com/waynegramlich/challenge-bot +// 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; -// 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 + 0.6; -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 - 0.8; +include -deck_holder_length = sonar_holder_depth * 2 + deck_depth + 15; +sonar_holder(); -module sonars(){ - translate([between_sonar_centers / 2, 0, 0]){ - cylinder(r = sonar_radius, h = sonar_height);} - // for the variance with which the physical sonar cylinders are placed - translate([between_sonar_centers / 2 - between_sonar_centers_variance, 0, 0]){ - cylinder(r = sonar_radius, h = sonar_height); - translate([0, -sonar_radius, 0]){ - cube([between_sonar_centers_variance, sonar_diameter, sonar_height]);}} - translate([-between_sonar_centers / 2, 0, 0]){ - cylinder(r = sonar_radius, h = sonar_height);}} +/* + This file is part of challenge-bot. -module sonar_holder(){ - elbow_length = deck_depth + 0.8; - difference(){ - cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]); - translate([sonar_holder_length / 2, sonar_holder_width / 2, -0.05]){ - sonars();}} - translate([sonar_holder_length, 0, 0]){ - cube([elbow_length, - deck_depth, - sonar_holder_depth]); - translate([elbow_length, 0, 0]){ - linear_extrude(height = sonar_holder_depth){ - polygon([[0, 0], - [sonar_holder_depth, 0], - [sonar_holder_depth, sonar_holder_width / 2], - [0, sonar_holder_width / 2 + sonar_holder_depth]]);} - translate([0, (sonar_holder_width + sonar_holder_depth) / 2, 0]){ - cube([sonar_holder_depth / 2, - (sonar_holder_width - sonar_holder_depth) / 2 + 0.8, - sonar_holder_depth]);} - translate([-1.7, sonar_holder_width + 0.8, 0]){ - linear_extrude(height = sonar_holder_depth){ - polygon([[0, 0], - [sonar_holder_depth / 2 + 1.7, 4], - [sonar_holder_depth / 2 + 1.7, 0]]);}}}}} + 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. -module deck_holder(){ - deck_holder_width = sonar_holder_width - deck_depth; - linear_extrude(height = deck_holder_width){ - difference(){ - square([deck_holder_length, sonar_holder_depth * 2 + deck_depth]); - translate([sonar_holder_depth, sonar_holder_depth]){ - square(deck_depth);} - translate([sonar_holder_depth * 2 + deck_depth, sonar_holder_depth]){ - square([deck_holder_length - (sonar_holder_depth * 2 + deck_depth), - deck_depth]);}}}} + 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. -deck_holder(); -translate([0, sonar_holder_depth * 2 + deck_depth + 2, 0]){ - sonar_holder();} + You should have received a copy of the GNU Affero General Public License + along with challenge-bot. If not, see . +*/