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UV

Detects level of UVAB above 1 uW/cm2 and makes a sound alarm
  So as commented my son (4) has a rare condition so he can't be exposed to UV light (the Sun, halogen and some other artificial lights). There are other issues … Read more
Synchronizes a cieling full of UV LEDs to music
This project began as a graduation gift to my sister. I thought it would be cool to install lights in our basement that react to music so that it could be used as a … Read more
Emits bright light and loud noises =D
Around the end of February every year there's a 'Chinese Lantern Festival' that happens in my city. Lots of junk to buy, cool lanterns, interesting food, and most … Read more