We will now put on the on/off switch. Materials used No. Part Name Image 1. Zircon PCB x1 3. Switch x1 Tools needed No. Part Name Image 1. SOLDERING IRON 2. SOLDER 3. WIRE CUTTERS Switch Put the switch in the 3 holes. The direction does not matter. Solder all three holes and cut the excess length of pin with a wire cutter