Let's get started.
Step 1: Materials
- Altoids Smalls tin: ~$1.50 at a drug store. Or buy them in bulk on Amazon.
- (1) Wire Housing: $0.13 at Mouser.com
- (2) Wire Header: $0.14 each at Mouser.com
- 3V Coin Cell Battery: Find them for cheap on ebay.com
- Coin Cell Battery Holder: $1.56 at Mouser.com
- (2) Small Pieces of Hookup Wire
- (1) Rubber Grommet: 1cm across, can be found at any hardware store
- Dremel Tool or Rotary Device