Niklas Ekström is the creator of the A314 expansion board for the Commodore Amiga 500 along with other stuff.
Link to Github project:
https://github.com/niklasekstrom
Tags / Projects:
A314 expansion board for the Amiga 500 that goes in the trapdoor expansion slot. A Raspberry Pi is attached to the A314, and the A500 and the RPi can communicate through a shared memory
flickerfixer open source flicker fixer for Amiga 500, 2000