* If you're using a 10W or less bulb, 1/2W is ok. Otherwise, 1W is best.
There are a few parts necessary, but all of them are pretty easy to get.
The rest are electronic components, all available from DigiKey.
This guide was first published on Apr 21, 2013. It was last updated on Apr 21, 2013.
This page (Parts) was last updated on May 25, 2020.