I was looking at all those swoopy-zoomy internet connected and controllable thermostats. "Self," I told myself, "we should make one of those." He didn't seem all that excited about that - I mean, what do we know about hardware, firmware, electronics or HVAC? Well, now's as good as any to figure it out.
So without further ado, here's my Instructable on my endeavors building a functioning 3-zone thermostat. (internet connectedness coming later)