X-Git-Url: http://challenge-bot.com/repos/?a=blobdiff_plain;f=3d-printables%2Fsonar-table-top-holder.scad;h=bc7a96ba0baa8bd752657d7c93053c58f78890db;hb=fbbda4d95e26046360c913691049a53b4e8b90ab;hp=e3535d90a52afa6d7050eee0df699e9ad3c824f3;hpb=bc750455ce18651fca4a746ceaff591d97aca93a;p=challenge-bot

diff --git a/3d-printables/sonar-table-top-holder.scad b/3d-printables/sonar-table-top-holder.scad
index e3535d9..bc7a96b 100644
--- a/3d-printables/sonar-table-top-holder.scad
+++ b/3d-printables/sonar-table-top-holder.scad
@@ -4,82 +4,16 @@
 // https://gitorious.org/ozzloy/challenge-bot
 // https://github.com/waynegramlich/challenge-bot
 
-$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_plate_width = 20;
-// 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
-sonar_sensor_radius = 15.82 / 2 + 0.3;
-sonar_sensor_height = 13.8;
-between_sensor_centers = sonar_sensor_radius * 2 + 10.82;
-between_sensor_centers_variance = 2;
-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 is deck_depth minus a little bit to make arm fit
-//  into deck holder
-sonar_holder_depth = deck_depth - 0.8;
-
-deck_holder_length = sonar_holder_depth * 2 + deck_depth + 15;
+/*
+  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.
+ */
 
-module sensors(){
-  translate([between_sensor_centers / 2, 0, 0]){
-    cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}
-  translate([between_sensor_centers / 2 - between_sensor_centers_variance,
-             0,
-             0]){
-    cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);
-    translate([0, -sonar_sensor_radius, 0]){
-      cube([between_sensor_centers_variance,
-            sonar_sensor_radius * 2,
-            sonar_sensor_height]);}}
-  translate([-between_sensor_centers / 2, 0, 0]){
-    cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}}
-
-module sensor_holder(){
-  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 - 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]]);}
-      translate([0, (sonar_holder_width + arm_depth) / 2, 0]){
-        cube([arm_depth / 2,
-              (sonar_holder_width - arm_depth) / 2 + 0.8,
-              arm_depth]);}
-      translate([-1.7, sonar_holder_width + 0.8, 0]){
-        linear_extrude(height = arm_depth){
-          polygon([[0, 0],
-                   [arm_depth / 2 + 1.7, 4],
-                   [arm_depth / 2 + 1.7, 0]]);}}}}}
+$fn = 60;
 
-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]);}}}}
+include <sonar-table-top-holder-data.scad>
 
-translate([0, sonar_holder_depth * 2 + deck_depth + 2, 0]){
-  sensor_holder();}
-deck_holder();
+sonar_holder();