Has anyone made a DIY HVAC controller yet?

General Discussion
1

Hey fellow makers,

Has any of you successfully used a Arduino DUO + SmartThings Shield w/ relays and created a HVAC controller? Ex: DIY NEST?

I have all of the parts and can easily make the hardware just will need to figure out the software side, mostly from the SmartThings Shield + SmartApps side.

Ideas?

2

Already started prototyping the hardware and now just need to wire it all up then program it.

You rotate the outside face plate to change temp. (similar to nest)
I’d paint the whole thing black and frost the front cover and numbers would show through the frosting.
Similar to http://blog.spark.io/2014/01/17/open-source-thermostat/