Computer-driven, Open Source Based HVAC Control?

richardtallent asks: "Other than various X-10 compatible products, has anyone found a consumer-level, computer-programmable thermostat? I could hack something out with some discrete components and a serial port, but I'd prefer a stand-alone, wall-mounted device that communicates via Ethernet or serial. GPL/LGPL/BSD-licensed software is a must; full documentation and a CLR, Java, or ActiveX interface library would be even better. With a fully programmable interface, I could set up any number of scenarios and variables based on DOW, time, work/school schedules, CPU temperature override, current or forecasted weather, electricity/gas rates, IR signals, remote control via DSL, etc. I could also automate alerts for replacing the filter, estimate costs before the bill arrives, etc." I have seen the home of the future. We will build them ourselves out of nifty little projects like these.

Comments

This might help...

[chewedtoothpick]

here is a site that contains information about networked thermostats. Perhaps you can get one and hack it to do what you want. On the flip side, a few buddies and I who live in the heart of the wine industry (Napa Valley, CA) are trying to program computer-controlled cooling/heating/mixing systems etc... for the wine industry. Perhaps we can/should work on converting this to a standard HVAC thermostat as well. (note: we actually have been thinking of doing that but were worried about a possibally weak market.) Any suggestions?

http://www.xcicorp.com/ (the site about networked thermostats)

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