Archive for January, 2015

Bitten by the Home Automation Bug

Not quite two years ago, I wrote about a little timer I made using an Arduino microcontroller and a simple relay. The purpose was to turn a couple lamps on in my living room automatically at sunset, and off around 11:00pm. An old-fashioned timer doesn’t work so well because sunset changes every day, and the timer needed to be reprogrammed every couple of weeks.

That little project was fun, and the timer was quite useful for awhile. However, a few weeks ago, the relay burned out or something went wonky and the project died. I needed a replacement, and didn’t want to take time to rebuild my original timer.

Then I discovered the Belkin Wemo line. There are a few products in the Wemo line, but the one I was most interested in was a simple switched outlet. The advantage is that they are web connected, and can be turned on and off with an app from anywhere you have an internet connection. Among the simple programs is switching relative to sunrise and sunset. It would work nicely. However, I discovered something in the process that would work even better.

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