Raspberry Pi Wireless Thermostat
Here's some code to make a Raspberry Pi control a Tower RFWRT wireless thermostat. It's adaptable to other makes and models, but this is the one I've got. More info about reverse engineering the Tower RFWRT.
There's two bits. A C executable, called
boiler_control, which when passed an
off argument, will send the appropriate signal to the heating control
There's a separate Go executable, called
thermostat, that runs thermostat
control loop. It can be configured to read a file at regular intervals for the
target temperature, allowing the use of
cron to schedule your heating.
thermostat can be cross compiled from any Go compiler, but it's probably
easiest to compile
boiler_control on the Pi.