A tiny game console?, a wrist watch?, a development board?, what if you can integrate everything into a design?
More information and open source files:
https://github.com/LED-BOY/Ledboy-MINI
Wrist watch:
https://youtube.com/shorts/J5Fc3RTty6A?si=cXJqnI0C32VpqKdh
Game:
https://youtube.com/shorts/wbee40AKwug?si=-oyfOlo1M7chfe-x
If you are interested you can buy a kit here:
https://www.elecrow.com/ledboy-mini.html
the usb is used to flash the device via the CH340E usb to serial adapter.