Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...
If you're tired of bumping into things when you get out of bed in the middle of the night, this DIY project may be for you. LEDs mounted under the bed turn on when you get up or approach the bed, but ...