MP3 Player

A friend an I are currently working on making an MP3 player from nothing, we are planning to use both an ESP32 and a Nordic nRF5340 microcontroller. This will be connected to an SD card slot for storing songs. we plan to connect this to a 3.5mm headphone jack and use LE audio (which still isn't fully supported) and Bluetooth Classic when needed so that we can connect most modern headphones. We will use an E-ink display for the lower battery usage. This will use a custom PCB and housing.