Bristle Bot from PS2 Controller Motor

Step 4 Assembly (continued)

Attach the four toothbrushes to the bottom of the battery holder using hot glue. Each should orient the same way, and should assemble to all the same height. I canted two of the toothbrushes in to avoid a ridge on the perimeter of the battery holder, this ensured identical heights for all the brushes.

Attach the switch to the side opposite the motor, next to the battery terminals