//$fn=20;
$fs=1/2; // minimal fragment size

module motor_hole(hh)
{
  intersection()
  {
    cylinder(h=hh,r=4.9/2);
    translate([-2.5,-1.5,0]) cube([5,2.9,hh]);
  }
}

module gear_hole()
{
  translate([0,10,1])cylinder(r=13/2,h=5.1);
  translate([0,10,-1])cylinder(r=10/2,h=3);
  translate([0,21,3]) rotate([90,0,0])cylinder(r=2.5/2,h=22);
  translate([4,10,3]) rotate([0,90,0])cylinder(r=2.5/2,h=7);
}

module sector(rr,fi1,fi2,hh)
{
  intersection()
  {  
    cylinder(r=rr,h=hh);
    translate([-100,-50,-10])cube([100,100,100]);
  }
}

module mount1(len=100)
{
  difference()
  {
    union(){
      translate([10,0,0])cube([len,20,6]);
      translate([10,10,0])cylinder(r=10,h=6);
      translate([10,10,0])cylinder(r=6,h=12);
      translate([len+10,10,0])cylinder(r=10,h=6);
      //translate([10,10,0])cylinder(r=20,h=1); //for optoend
      translate([10,10,0])sector(rr=20,hh=1,fi1=0,fi2=360); //for optoend
    }
    union()
    {
      translate([10,10,-1]) motor_hole(hh=14);
      translate([len+10,0,0]) gear_hole();
    }
  }
}

module mount2(len=100)
{
  difference()
  {
    union(){
      translate([10,0,0])cube([len,20,6]);
      translate([10,10,0])cylinder(r=10,h=6);
      translate([len+10,10,0])cylinder(r=10,h=6);
    }
    union()
    {
      translate([len+10,0,0]) gear_hole();
      translate([10,10,-1])cylinder(r=4/2,h=12);
      translate([10,10,-10])cylinder(r=3.35*7/5.5,h=12, $fn=6); //m4?

    }
  }
}

module mount3(len=100)
{
  difference()
  {
    union(){
      translate([10,0,0])cube([len+10,20,6]);
      translate([10,10,0])cylinder(r=10,h=6);
    }
    union()
    {
      translate([10,10,-1])cylinder(r=4/2,h=12);
      translate([len+10,10,-1])cylinder(r=4/2,h=12);

      translate([len+10,10,4])cylinder(r=3.35*7/5.5,h=12, $fn=6); //m4?

      translate([len+10+5,10-5,-1])cylinder(r=3/2,h=12);
      translate([len+10+5,10+5,-1])cylinder(r=3/2,h=12);
    }
  }
}

module mount4()
{
  difference()
  {
    union(){
      //translate([0,0,0])cube([10,20,2]);
      translate([8,0-7.5,0])cube([2,35,16]);
      translate([8-10+4+2,-3.0,2-2])cube([10-4,26,16]);
      translate([8-10,-3.0,2-2])cube([10-4,26,16-4-2]);
      translate([2+2,23,12-2])rotate([90,0,0])cylinder(r=4+2,h=26);

//translate([-10,-4.5,9]) rotate([0,90,0])cylinder(r=1,h=21);
//translate([-10,-4.5+29,9]) rotate([0,90,0])cylinder(r=1,h=21);
    }
    union()
    {
      translate([0,10,-1])cylinder(r=4/2,h=12);
      translate([0-4,10-2,-1])cube([4,4,12]);

      translate([5,10-5,-1])cylinder(r=3/2,h=12);
      translate([5,10+5,-1])cylinder(r=3/2,h=12);

      translate([5,10+5,+2])cylinder(r=3.35,h=12,$fn=6); //nut M3
      translate([5,10-5,+2])cylinder(r=3.35,h=12,$fn=6);  //nut M3

      translate([8-0.5-12,-1.5,4])cube([3+30,23,13]);

translate([-10,-4.5,9]) rotate([0,90,0])cylinder(r=1,h=21);
translate([-10,-4.5+29,9]) rotate([0,90,0])cylinder(r=1,h=21);
    }
  }
}

module mount5()
{
  difference()
  {
    union()
    {
      cylinder(r=12,h=20);
      translate([10-2,-2.5,0])cube([30-10,5,20]);
      translate([10-2,-2.5,0])cube([30,5,20-10]);
      translate([33-5,2.5,15-5])rotate([90,0,0])cylinder(r=10,h=5);

    translate([0,0,10])rotate([90,0,0])cylinder(r=7.0,h=14);
    translate([0,0,10])rotate([90,0,120])cylinder(r=7.0,h=14);
    translate([0,0,10])rotate([90,0,-120])cylinder(r=7.0,h=14);

    }
    translate([0,0,-1])cylinder(r=7,h=22);
    translate([0,0,2])cylinder(r=7+1,h=22);
    translate([32,5,10])rotate([90,0,0])cylinder(r=3.7/2,h=10);

    translate([0,0,10])rotate([90,0,0])cylinder(r=3.0/2,h=30);
    translate([0,0,10])rotate([90,0,120])cylinder(r=3.0/2,h=30);
    translate([0,0,10])rotate([90,0,-120])cylinder(r=3.0/2,h=30);

    translate([0,0,10])rotate([90,0,0])cylinder(r=3.35,h=11,$fn=6);
    translate([0,0,10])rotate([90,0,120])cylinder(r=3.35,h=11,$fn=6);
    translate([0,0,10])rotate([90,0,-120])cylinder(r=3.35,h=11,$fn=6);

  }
}

module mount6()
{
  difference()
  {
    union()
    {
      cylinder(r=7.4,h=3+17);
      cylinder(r=12,h=3);
    }
    translate([0,0,-1])cylinder(r=6,h=25);
    rotate([0,0,0]) translate([5,0,20])cube([20,3,20],center=true);
    rotate([0,0,120])translate([5,0,20])cube([20,3,20],center=true);
    rotate([0,0,-120])translate([5,0,20])cube([20,3,20],center=true);

  }
}


/*
translate([-60,60,0])rotate([0,0,-90])mount1(len=50);
translate([-5,0,0])rotate([0,0,90])mount1(len=50);
translate([30,0,0])rotate([0,0,90])mount2(len=100);
translate([60,0,0])rotate([0,0,90])mount3(len=100);
translate([90,0,0])rotate([0,0,90])mount4();

translate([-35,90,0])mount5();
translate([-10,115,0])mount6();

translate([-100,100,0]) sector(rr=20,hh=1,fi1=0,fi2=360);
*/

//rotate([0,0,-90])mount1(len=50);
//rotate([0,0,90])mount2(len=100);
//rotate([0,0,90])mount3(len=100);
//rotate([0,0,90])mount4();
//mount5();
mount6();