Tiny DIY Train Controller v1

The problem with this prototype is it won't last five minutes in the bottom of my bag. So it's time to make a case for it. First problem is this DPDT switch (pictured here with disassembly already started): It comes with too much cable, and the PCB crudely soldered over the terminals is bigger than the ideal panel mounting hole. So that PCB needs to go. Numbering the wires from black (1) to red…