Earlier we posted on how we used some free time over the holidays to make Adafruit’s Tweet-A-Watt project. We wanted to see if we could combine the device with the dSwitch and conserve some energy around the office. We wrote a quick program that “listens” for a human, and turns the lights off if no one is there. The...

To celebrate Christmas, we decided to see just how much electricity those Christmas lights on our tree burn up (Merry Christmas Mr. Gore!). Not really because we’re concerned about global warming, but more because we were interested in the XBee, and the really cool project from adafruit.com. In a nutshell, this thing takes an off-the-shelf Killawatt, which monitors electricity...