challenge-bot.com Git - challenge-bot/blob - sonar-table-top-holder.scad

   1 // challenge-bot
   2 // GNU AGPLv3 (or later at your option)
   3 // project available at these locations:
   4 // https://gitorious.org/ozzloy/challenge-bot
   5 // https://github.com/waynegramlich/challenge-bot
   6
   7 // sonar sensor measurements from https://www.thingiverse.com/thing:92869,
   8
   9 // 3/8 inch in mm
  10 deck_depth = 4.7625;
  11 sonar_plate_width = 20;
  12 sonar_plate_length = 45;
  13 sonar_sensor_radius = 8;
  14 sonar_sensor_height = 13.8;
  15 sonar_holder_length = sonar_plate_length + 10;
  16 sonar_holder_width = sonar_plate_width + 3;
  17 sonar_holder_depth = 3;
  18 between_sensor_centers = 27;
  19
  20 module sensors(){
  21   translate([between_sensor_centers / 2, 0, 0]){
  22     cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}
  23   translate([-between_sensor_centers / 2, 0, 0]){
  24     cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}}
  25
  26 module deck_holder(){
  27   deck_holder_length = 25;
  28   deck_holder_width = sonar_holder_width;
  29   cube([deck_holder_length, deck_holder_width, sonar_holder_depth]);
  30   translate([0, 0, sonar_holder_depth]){
  31     cube([deck_depth, deck_holder_width, deck_depth]);
  32     translate([0, 0, deck_depth]){
  33       cube([deck_holder_length, deck_holder_width, sonar_holder_depth]);}}}
  34
  35 module sonar_table_top_holder(){
  36   difference(){
  37     union(){
  38       cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]);
  39       translate([sonar_holder_length, 0, 0]){
  40         deck_holder();}}
  41     translate([between_sensor_centers / 2 + sonar_sensor_radius + 3,
  42                sonar_holder_width / 2,
  43                -1]){
  44       sensors();}
  45     // cut out a bit of the circle to make it 3d printable,
  46     //  no severe overhang
  47     translate([3 + sonar_sensor_radius,
  48                sonar_holder_width - 3.025,
  49                sonar_holder_depth / 2 - 0.025]){
  50       cube([10, 6.1, sonar_holder_depth + .1], center = true);
  51       translate([between_sensor_centers, 0, 0]){
  52         cube([10, 6.1, sonar_holder_depth + .1], center = true);}}}}
  53
  54 rotate([90, 0, 0]){
  55   sonar_table_top_holder();}