 Hey what's up folks, in this project we're making an LED audiovisualizer. We designed and 3D printed a case for this lovely little LED matrix and an Adafruit feather. This is a 13x9 LED matrix that features the IS31FL3741 LED driver. It's packed with 117 RGB LEDs that are 2x2mm in size. Stem-a-QT connectors make it easy to plug and play over I2C so it's easy to connect to a microcontroller like the Feather RP2040. The Adafruit Feather Sense NRF 52A40 features a PDM MIMS microphone for audio projects. The LED driver features libraries for both circuit Python and Arduino so it's easy to quickly get up and running. In the demo code, RGB colors are set up in an array to generate a heat map of the incoming audio data. This demo code was ported by Liz Clark from the MicroLab Waterfall Spectrum Analyzer. This particular demo was written by Philip Berges and features a bounce effect when the audio is peaking. The MicroLab library allows you to crunch numbers fast in circuit Python with numpy-like commands to quickly process data. Be sure to check out the learn guide by Jeff Epler for a full breakdown on using this library in your projects. The LED matrix and Feather Sense NRF 52A40 are secured to a PCB bracket. It's secured to the 3D printed enclosure with M3 hardware screws. The case and back cover snap fit together for an easy assembly. On the side of the case is a port opening for connecting the feather over USB. We designed a built-in button pusher so you can use the reset button without having to take it apart. We had a lot of fun putting this one together and hope this inspires you to pick up the LED matrix and the Adafruit Feather Sense. Make sure to subscribe for more 3D printed and circuit Python projects from Adafruit.