32-Band Audio Spectrum Visualizer

Max7219 32x8 LED Matrix

Raspberry Pi Pico

Arduino IDE

Electret Microphone Amplifier - MAX4466 with Adjustable Gain

<html><body><p>A 32-band audio spectrum visualizer, made with Raspberry Pi's RP2040. It can pick up and analyze the spectrum through an electret microphone. Just place this gadget near your audio speaker, it could visualize the spectrum on a 32x8 LED dot matrix display at 70 fps. Please check the detailed documentation and code at: <a href="https://github.com/megatops/arduino_toys/tree/main/spectrum">https://github.com/megatops/arduino_toys/tree/main/spectrum</a></p><p></p><figure><iframe src="https://www.youtube.com/watch?v=xeoi0uXBLIc"></iframe></figure><p></p></body></html>