Well, Clay, if you don't leave the cat any food, and leave the top off of the fish tank, the two problems might cancel each other out. Chick On 07/06/2012 02:00 PM, Clay Dowling wrote: > I need to pick up a cheap USB io interface board, and then I'm going to > try it for some light industrial automation work. Maybe a fish feeder > for when I'm on vacation?