In this project, you'll learn how to build an audio reactive LED matrix using the 13x9 IS31FL3741 LED matrix and Feather Sense nRF52840 board with CircuitPython. 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.

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/blob/main/Feather_Sense_Audio_Visualizer_13x9_RGB_LED_Matrix/waterfall_visualizer/code.py

Code by Phil B on GitHub

https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/Feather_Sense_Audio_Visualizer_13x9_RGB_LED_Matrix/audio_spectrum_lightshow/code.py

3D Files on Thingiverse

https://www.thingiverse.com/thing:4983214/

3D Files on PrusaPrinters

https://www.prusaprinters.org/social/3814-adafruit/prints

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

Visit the Adafruit shop online - http://www.adafruit.com

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