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OpenSCAD source code: Circuit support plate for Tour Easy rear running light
// 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();
@ednisley

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@ednisley ednisley commented Sep 19, 2021

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

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