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;
+binder_clip_attacher_length = 30; // not measured; just a rough estimate
+screw_hole = 2.2;
+sonar_holder_length = buffer + between_sonar_centers + sonar_diameter + buffer + binder_clip_attacher_length;
sonar_holder_width = buffer + sonar_diameter + buffer;
// sonar_holder_depth is deck_depth minus a little bit to make arm fit
// into deck holder
cylinder(r = sonar_radius, h = sonar_height); } }
module sonar_holder() {
- elbow_length = deck_depth - 0.5;
- rounded_corner_radius = buffer;
- 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,
- sonar_holder_width,
- 0]) {
- corner_rounder(rounded_corner_radius,
- sonar_holder_depth,
- "bottom-right"); } }
- 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]]); } } } } }
-
-module corner_rounder_2d(radius, corner_name = "top-left") {
- rotate_for_corner = (corner_name == "top-left") ? 0 :
- ((corner_name == "top-right") ? -90 :
- ((corner_name == "bottom-left") ? 90 :
- ((corner_name == "bottom-right") ? 180 :
- 1 / 0)));
- rotate(rotate_for_corner) {
difference() {
- square(radius);
- translate([radius, radius]) {
- circle(radius); } } } }
+ difference() {
+ cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]);
+ translate([sonar_holder_length - between_sonar_centers, sonar_holder_width / 2, -0.05]) {
+ sonars(); } }
+ translate([binder_clip_attacher_length / 2, sonar_holder_width / 2], 0) {
+ cylinder(r = screw_hole, h = sonar_holder_depth); } } }
-module corner_rounder(radius, height, corner_name = "top-left") {
- linear_extrude(height = height) {
- corner_rounder_2d(radius, corner_name); } }
+module attaching_piece() {
+ linear_extrude(height = sonar_holder_depth) {
+ difference() {
+ square(sonar_holder_width, center = true);
+ circle(screw_hole); } } }
/*
This file is part of challenge-bot.