Currently working on a hand-soldered nunpad and an mp3 player using a esp32 s3. Not quite sure if the esp32 will manage decoding and encoding audio quickly enough though, as I'm planning for it to be Bluetooth only. So it will need to decode flac, encode the pcm to sbc and then send it to my earphones.

I accidentally fried my last spare esp32 yesterday though, so I'm waiting for new ones to arrive. Wops.