// Crea la plataforma de Protoboard para atornillarlos
difference(){
    cube([20,10,3]);
    translate([10,5,0])
        cylinder(r=3.18/2,h=15,$fn=200, center=true);
}

#translate([50,0,0])
    rotate([0,0,45])
        cube([25,25,15],center=true);
color("blue")
translate([50,0,0])
difference(){
        union(){
            cylinder(r=20,h=5,$fn=100);
            cylinder(r=10,h=30,$fn=100);
        }
        cylinder(r=3.18,h=70,$fn=100,center=true);
}
m=10;
n=5;
for (j=[0:m-1]){
    translate([-j*20,0,0])
        for (i=[0:n-1]){
            translate([0,i*20,0])
            cylinder (r=3.18/2,h=10,$fn=200,center=true);
        }
}