Hi user
https://github.com/CarlFK/veyepar/wiki/Audio-Visualization
CircuitPython Workshop - 8

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old missing 01: http://youtu.be/DZl5CKAOa60
https://archive.org/details/cpx18-circuitpython_workshop
CircuitPython Workshop - example 01 - 5

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Veyepar Video Eyeball Processor and Review