Build Your Own Open Source Twittering Power Meter

ptorrone writes "Open source hardware company 'Adafruit Industries' has released a 'Tweet-a-watt' kit. It's an open source power monitoring kit that mods an off-the-shelf power meter which can 'tweet' (publish wirelessly) the daily KWH consumed & Cumulative Kilowatt-hours to your Twitter account, Google App Engine, Facebook, IRC, whatever ... They recently won the 'GreenerGadget' design competition and have now released an open source hardware kit."