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 program ended up saving some energy, which over the year, will save some dough. “How much you ask?” Read on . . .
The setup is pretty easy in our office: most of the appliances hook into one socket. Safety first though: I made sure that the dSwitch was properly sized, and the electrical load would not exceed the rated 10 Amps. In my particular area, I have a laptop, a printer, and a few lights hooked up. The laptop converter draws about 65 Watts at most, and I have a 100-Watt incandescent lightbulb, 2 14-Watt CFL light bulbs, and a printer that uses about 72 Watts. Sometimes I use my soldering iron, which draws about 50 Watts.