Any update on this? Lessons learned? It would be nice to see some of your guys' code also. I also have been thinking about combining hobbies. Eventually, my ultimate goal would be to set up all electronics with a combination of raspberry pi and arduino. I did find some links. I'm still a bit young in this direction, so im still putting together ideas. I did find this link and thought it was a good start. I also bookmarked your "Nodearium" Motti http://www.aquariumcontroller.net/diy.html