This project really showcases the power of open source and passionate people building something for the sheer joy of it :)

It's basically an EP32 chip with a tiny smidge of custom hardware that's been programmed to speak the serial protocol of quite a number of 8 bit machines.

I have one for my 800XL and that speaks Atari's SIO protocol.

The depth and breadth of software for the thing is amazing, and overall I find the whole project incredibly inspirational.

Lately, they've been on a kick of creating a project where they've instrumented classic Atari games to post high scores on the internet, with a website 'lobby' where you can sign up to play games online with others.

Totally love mine, and which I had a bigger house so I could have an Apple II and a C64 and get the Fujinet for those platforms as well :)