This was a fun project and I learned a lot about the data structures used in the Gameboy era.

Someone wrote an article about my original (now deleted) Reddit post if you want to learn more https://www.tomshardware.com/news/raspberry-pi-pico-gameboy-cable-sniffer-emulates-pokemon-trading#xenforo-comments-3805572, or subscribe to my YT as I am releasing a video about the Gameboy Printer this week.