Standalone DJ System Runs On ESP32

What happened

There are plenty of ways to DJ with a laptop and various controller setups. It’s called Pajoniiir, and it’s intended to replace a laptop in the DJ booth.

In its place stands an ESP32-P4 microcontroller, hooked up to a 4.3-inch touchscreen display in an off-the-shelf combo from Guition. The ESP32’s twin USB interfaces are hooked up in turn to a Pioneer DDJ-FLX4 controller, and a USB stick carrying a Rekordbox music library. The microcontroller is then also hooked up to a PCM5102A DAC module for audio output.