digital controller

Greetings fellow DIY'ers! I've just finished building an open source multi-purpose controller. Although I learned a lot, the resulting device is more proof-of-concept then finished solution. I'm in the planning stages of the next project iteration and would appreciate your feedback...

OK, I've had several requests on doing an arduino based room controller. I have been playing around for a few months now and have been bench testing one for a while. This tutorial will try to show you how I went about getting it all working. My controller is setup to monitor and log five...