Readers this entry is not as geeky as you might expect, but it is a good project.
We leave lights on and fans on all day but we don’t get to benefit 100 percent of the energy being used. So why not automate lights and fans to only be on when you are present in a room? I present the Motion Detector.
Now my fans turn on when I enter and turn off when I leave. This particular model found at Home Depot will check for your presence every 15 seconds till 15 minutes. You can even force it on and off like a regular switch. Parts will cost about the same as the yearly operation cost, from there its all savings.
I wonder if I can do the same thing for my for my desktop….