Én is nézelődök Arduino területen (elektronikában noob vagyok), így találtam ezt:
http://www.youtube.com/watch?v=30rPt802n1k
"If you have a simple Arduino project that uses only a few pins, you might be able to shrink it down to a single 8-pin ATtiny chip. In this video, Matt Richardson shows you how, based on a tutorial from MIT Media Lab's High-Low Tech Group. The best part is you can use the same Arduino code and development environment that you're already used to."
Hátha valakinek hasznos lesz.