OpenSCAD source code: Circuit support plate for Tour Easy rear running light

Running Light Circuit Plate.scad

// Circuit plate for Tour Easy running lights
// Ed Nisley - KE4ZNU - 2021-09

/* [Hidden] */

ThreadThick = 0.25;
ThreadWidth = 0.40;

HoleWindage = 0.2;

Protrusion = 0.1;     // make holes end cleanly

function IntegerMultiple(Size,Unit) = Unit * ceil(Size / Unit);

ID = 0;
OD = 1;
LENGTH = 2;

inch = 25.4;

//----------------------
// Dimensions
// Light case along X axis

LightID = 23.0;

WallThick = 2.0;

Screw = [3.0,6.8,4.0];                  // M3 OD=washer, length=nut + washers
Insert = [3.0,4.2,8.0];                 // splined brass insert, minus splines

InsertOffset = 10.0;                    // insert from heatsink end

PinOD = 1.6;                            // alignment pins
PinOC = 14.0;
PinDepth = 5.0;

Plate = [50.0,LightID,Insert[OD] + 4*ThreadThick];    // overall plate size

WirePort = [10.0,3.0,2*Plate.z];

NumSides = 2*3*4;

//----------------------
// Useful routines

module PolyCyl(Dia,Height,ForceSides=0) {     // based on nophead's polyholes

  Sides = (ForceSides != 0) ? ForceSides : (ceil(Dia) + 2);
  FixDia = Dia / cos(180/Sides);
  cylinder(r=(FixDia + HoleWindage)/2,
           h=Height,
     $fn=Sides);
}

// Circuit plate

module Plate() {

  difference() {
    intersection() {
      cube(Plate,center=true);
      rotate([0,90,0])
        cylinder(d=LightID,h=2*Plate.x,$fn=NumSides,center=true);
    }

     rotate([0,90,0]) rotate(180/6)
        translate([0,0,-Plate.x])
          PolyCyl(Screw[ID],2*Plate.x,6);

     rotate([0,90,0]) rotate(180/6)
        translate([0,0,-Plate.x/2 - Protrusion])
          PolyCyl(Insert[OD],Insert[LENGTH] + InsertOffset + Protrusion,6);

    translate([-Plate.x/2 + InsertOffset + Insert[LENGTH]/2,0,Plate.z/2])
      cube([Insert[LENGTH],Insert[OD],Plate.z],center=true);

    for (j=[-1,1])
      translate([-Plate.x/2,j*PinOC/2,0])
        rotate([0,90,0]) rotate(180/6)
          translate([0,0,-PinDepth])
            PolyCyl(PinOD,2*PinDepth,6);

    for (j=[-1,1])
      translate([0,j*(Plate.y/2 - WirePort.y/2),0])
        cube(WirePort,center=true);


  }

}

//- Build it

Plate();

More details on my blog at https://wp.me/poZKh-aqj