If you long for the days of pixely music visualizers, then look no further than this guide from Adafruit to make your own tiny little spectrum visualizer using a Genuino.
You’ll need a Genuino (known as Arduino in the US), a microphone amplifier, an LED pixel matrix, and a few other parts to make this project happen, but the end result is a visualizer that will turn any sound into art. It’s a simple, fun project that ends up teaching you quite a bit along the way.
Tiny Arduino Music Visualizer [Adafruit]
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