After a lot of work, I finished version 2 of the story box. Same cartridge system, same buttons, but I added a screen to navigate through the songs.
I used:
An ESP32
A TFT screen
A MP3 player
A USB interface
A battery charging Module
The ESP32 reads files on the USB stick when inserted, displays an image located on the drive.
I also added + / - volume buttons that where missing on V1
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