Weekly Project: Voltoids; or, How to Make 5V from 1.5V

Step 3 Can It

A circular Altoids tin is ideal for holding a retro-looking rotary switch. Drill a 3/8-inch hole in the center of the tin for holding the rotary switch. Make sure there is enough clearance inside the tin for the depth of the switch.

Attach the 2-position header pins at the 12-oclock position around the outside of the tin. Be careful that only the plastic portion of the header pin touches the metal sides of the tin. Glue these header pins into place.

Also, line the inside the tin with an insulated material. An Xbox Jewel Case skin from Gamer Graffix is a perfect fit for this round tin.