How to Switch a Transistor

I show how I solved the hourly hydration problem by wiring a transistor to a water pump behind my desk. I describe three different ways of switching: MOSFETs, BJTs and relays. I then skim over logic gates.

Follow up tutorial on how to select a transistor: http://goo.gl/Zl46U
Music from http://goo.gl/NblLp