Very cool. Mind sharing some details? Did you blog it? What kind of hardware did you use? How did you figure out how/what to do? What other "smart-house stuff" did you come up with?
Sadly I didn't blog it or even take pictures. I didn't set out with the "this is going to be an awesome project" geek-out mentality. I started small and it kind of accreted over about a year.
My HVAC interface was a 5-wire (we had heat-pump and e-heat) so I made a relay board that was controlled by arduino that ran off the 24v supplied by the furnace. There are common wire colors that are industry standard. Mine were installed wrong causing many headaches.
(1) Oh hey! look. They've got a selction of insteon compatible and wifi thermostats now! All for less than $200! Nice.
