LED Flasher

You dont have to throw it, just shake it, and it acts just like regular dice! It rolls out slowly and flashes the last combination or winning number! Microprocessor controlled circuit is fun to learn. Runs on one 3V Lithium button cell
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Watch The Audio Levels! How loud is the audio at the concert? What’s the level of your stereo? Exactly how loud is that train that runs by your house? This little pocket Vu meter will tell you in a flash! The LED bar graph shows you the ambient room audio level using [...]

Reverse engineered circuit diagram of a commercial LED fiber optic night light. The circuit board and LED’s are mounted inside a plastic case with ventilation holes. The light is particularly bright.
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