LED Matrix Audio Visualizer IS31FL3741

The Feather Sense nRF52840 features a built-in PDM MEMs microphone for audio input. Audio is sampled via the onboard PDM microphone. The sampled data is then visualized with color.

YouTube Video: https://youtu.be/LPXLpRKf-MI

Guide: https://learn.adafruit.com/mini-led-matrix-audio-visualizer

Feather Sense nRF52840
https://www.adafruit.com/product/4516

LED Matrix 13x9 IS31FL3741
https://www.adafruit.com/product/5201

Code by Liz Clark on GitHub
https://github.com/adafruit/Adafruit_Learning_System_Guides/tree/main/Feather_Sense_Audio_Visualizer_13x9_RGB_LED_Matrix

uLab Learn Guide
https://learn.adafruit.com/ulab-crunch-numbers-fast-with-circuitpython

3D Parts Library on GitHub
https://github.com/adafruit/Adafruit_CAD_Parts