Bob hacked a home weather station transmitter and made a home thermometer from it. He writes:
Recently I’ve found this piece of electronic on the dumpster, it was looking interesting – compact case with battery holder, LCD display, temperature and humidity sensor. It has also radio transmitter, but I’m not interested in it since I don’t have the receiver station. I decided to bring it back to life.
Hacking home weather station transmitter – [Link]