Control your lamp, turn on your fan, kill your alarm clock, or start the music in style, using any flat surface as your lightswitch.
I was inspired to build the Knock Box when I woke up one night, stubbed my toe on my dresser, then knocked my lamp onto the floor as I reached for the fan. Now I can control both, independently, from my bed, in pitch darkness, no switches required. And so can you! SCIENCE!
What's better: You can build a Knock Box over a weekend, and all of the electronics can be bought at any Radio Shack. Just add a few bucks of electrical gear from the hardware store and you're ready to, a-hem, knock this one out.
- If you've never worked off a schematic before, this project will be difficult. Try building it on a breadboard first.
- This project involves mains voltage, which could start a fire or kill you. Think things through and be careful.