This is an audio spectrum VU meter using the LoL Shield for Arduino . The LoL Shield is a 14 x 9 LED matrix which fits onto the Arduino as a shield and is controlled through an efficient method known as Charlieplexing . It was designed by Jimmie P. Rodgers . This project uses a Fast ...By: andydoro
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Source: http://www.instructables.com/id/LoL-Shield-Audio-Spectrum-VU-Meter/
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