DIY Ambient Light Alarm
The idea ofthis project is to create an alarm that wakes via ambient light. In itself, this isn’t terribly hard. All you need is some LEDs, a clock and a microcontroller of some kind. Wire it all up, write some code and you’re done. I believe there are already numerous tutorials on how to do somethi...By: FlorianE3
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[original story: Instructables]