Full project details at https://github.com/aotta/PiCOLECO/tree/main?tab=readme-ov-file

Thank you to Robin Robin Edwards and his A8PicoCart for the idea and to A. Ottaviani for this implementation

NEW version 1.0a uploaded with partial support for Megacart switch banking roms up to 128kb

PiCOLECO is a multicart DIY yourself based on cheap "purple" Raspberry Pi Pico clone. It should works for all roms up to 32k, but there's no enough RAM on Pico to handle 128k or larger multirom.

WARNING! "purple" Pico has not the same pinout of original Raspberry "green" ones, you MUST use the clone or you may damage your hardware.

NOTE FAT FS used for flash file management is quite simple, you can't use FILENAME LONGER THAN 32 BYTES INCLUDED SUFFIX!!!!! PLEASE RENAME YOUR BIN FILES OR THE GAMES WON'T START AT ALL!!!

Just needs a purple pi pico, a pushbutton and ideally a diode.