We will now put on the on/off switch.

Materials used

No.Part NameImage
1.Zircon PCB x1Zircon PCB
3.Switch x1Switch

Tools needed

No.Part NameImage
1.SOLDERING IRONfemale T connector
2.SOLDERbattery case
3.WIRE CUTTERSwire 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

switch placement