For this project I built out a custom PCB with 10 SK6812 mini LEDs for use with WLED. Pretty straightforward board with a level shifter, mic, and IR inputs for controlling the colors. Uses a Xiao ESP32C3 for the control board, flashed with custom firmware to enable usermod for audio for this board as the official builds don't include it for ESP32C3.

Background: Last year around this time I won the AMD AI Pervasive Developer Contest hosted on Hackster with my entry for "Infinite Sands" an interactive sandbox that used a projector and camera to get images which were processed with DepthAnythingV2 to get back a depth map and utilized with ComfyUI and ControlNet to generate images based on provided audio based prompts. I received the award trophy at their ceremony and from the moment I got it I knew it was one I wanted to create a custom LED board for. It's a glass trophy so light can travel up through it and it's massive so makes for a nice display piece.

I've attached the schematic for it along with the gerber and BOM files.

The project is pretty straightforward:

• The Xiao ESP32C3 is used to control the lights and flashed with a custom WLED firmware that includes the audioreactive usermod
• The LED data line goes through a level shifter to 5V, the LEDs also receive 5V from the VUSB pin
• A microphone pinout exists for using a INMP441 microphone for the audioreactive capabilities
• An IR pin exists for optional IR support which is placed under expected female headers

I built the enclosure with PETG for the pieces. I used opaque PETG for the LED surrounding material so it would showcase the colors as they are selected.

For a full project breakdown see my hackster article: https://www.hackster.io/timo614/wled-display-board-fed7ed