+between_sensor_centers = 27;
+
+module sensors(){
+ translate([between_sensor_centers / 2, 0, 0]){
+ cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}
+ translate([-between_sensor_centers / 2, 0, 0]){
+ cylinder(r = sonar_sensor_radius, h = sonar_sensor_height);}}
+
+module deck_holder(){
+ deck_holder_length = 25;
+ deck_holder_width = sonar_holder_width;
+ cube([deck_holder_length, deck_holder_width, sonar_holder_depth]);
+ translate([0, 0, sonar_holder_depth]){
+ cube([deck_depth, deck_holder_width, deck_depth]);
+ translate([0, 0, deck_depth]){
+ cube([deck_holder_length, deck_holder_width, sonar_holder_depth]);}}}
+
+module sonar_table_top_holder(){
+ difference(){
+ union(){
+ cube([sonar_holder_length, sonar_holder_width, sonar_holder_depth]);
+ translate([sonar_holder_length, 0, 0]){
+ deck_holder();}}
+ translate([between_sensor_centers / 2 + sonar_sensor_radius + 3,
+ sonar_holder_width / 2,
+ -1]){
+ sensors();}
+ // cut out a bit of the circle to make it 3d printable,
+ // no severe overhang
+ translate([3 + sonar_sensor_radius,
+ sonar_holder_width - 3.025,
+ sonar_holder_depth / 2 - 0.025]){
+ cube([10, 6.1, sonar_holder_depth + .1], center = true);
+ translate([between_sensor_centers, 0, 0]){
+ cube([10, 6.1, sonar_holder_depth + .1], center = true);}}}}