Here's a little project I did last night: Power strip modified for dry-contact switching Magnetic switch on the door I'll try to keep this short: due to some insulation issues in the garage under the second floor, Henry's room gets kind of cold in the morning. This is not compensated by the house thermostat because it's in our room and we sleep with the doors closed. So we use a little electric space heater to regulate the temperature in Henry's room at night. With this comes a couple of problems: Heater can be left on in the morning If the door is open, the heater then runs open-loop and tries to heat the rest of the house The heater will run all day long, if it's set to even 1 degree above the "house" temp. This costs over $.25/hour It's also (more of) a fire hazard since the heater will potentially be running when no one is in the house I thought of a bunch of different ways to solve this problem. Sure, go ahead and t...
The personal blog of Scott McGrath: musician, gadget, and car guy.