sonar_sensor_height = 13.8;
between_sensor_centers = sonar_sensor_radius * 2 + 10.82;
between_sensor_centers_variance = 2;
-sonar_plate_length = 3 + between_sensor_centers + sonar_sensor_radius + 3;
+buffer = 3;
+sonar_plate_length =
+ buffer + between_sensor_centers + sonar_sensor_radius + buffer;
sonar_holder_length = sonar_plate_length + 10;
sonar_holder_width = sonar_plate_width + 3;
-sonar_holder_depth = 4;
+// sonar_holder_depth is deck_depth minus a little bit to make arm fit
+// into deck holder
+sonar_holder_depth = deck_depth - 0.8;
-deck_holder_length = 30;
+deck_holder_length = sonar_holder_depth * 2 + deck_depth + 15;
module sensors(){
translate([between_sensor_centers / 2, 0, 0]){
cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}}
module sensor_holder(){
- // arm_depth is deck_depth minus a little bit to make it fit
- arm_depth = deck_depth - 0.7;
+ arm_depth = sonar_holder_depth;
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]){
sensors();}}
- translate([sonar_holder_length, 0, 0]){
- cube([elbow_length, deck_depth, arm_depth]);
- translate([elbow_length, 0, 0]){
+ translate([sonar_holder_length - 1, 0, 0]){
+ cube([elbow_length + arm_depth + 1, deck_depth, arm_depth]);
+ translate([elbow_length + 1, 0, 0]){
linear_extrude(height = arm_depth){
polygon([[0, 0],
- [arm_depth, 0],
- [arm_depth, sonar_holder_width / 2],
- [0, sonar_holder_width / 2 + arm_depth]]);}
+ [arm_depth, 0],
+ [arm_depth, sonar_holder_width / 2],
+ [0, sonar_holder_width / 2 + arm_depth]]);}
translate([0, (sonar_holder_width + arm_depth) / 2, 0]){
cube([arm_depth / 2,
(sonar_holder_width - arm_depth) / 2 + 0.8,
module deck_holder(){
deck_holder_width = sonar_holder_width - deck_depth;
- cube([deck_holder_length, sonar_holder_depth, deck_holder_width]);
- cube([sonar_holder_depth,
- sonar_holder_depth * 2 + deck_depth,
- deck_holder_width]);
- translate([0, sonar_holder_depth + deck_depth, 0]){
- cube([deck_holder_length, sonar_holder_depth, deck_holder_width]);}
- translate([sonar_holder_depth + deck_depth, 0, 0]){
- cube([sonar_holder_depth,
- sonar_holder_depth * 2 + deck_depth,
- deck_holder_width]);}}
+ 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]);}}}}
translate([0, sonar_holder_depth * 2 + deck_depth + 2, 0]){
sensor_holder();}