I don't think I can realistically use the LCD directly, but the other circuit board has only 7 pins as input, so 5 data pins at most. This seems like it could be done, though I doubt any documentation exists for the board.
What can a total newb like me do with this?
https://i.imgur.com/CTF40Z1.jpg
send 1 to this guy, and wait for magic 🤷 https://www.youtube.com/channel/UCY0kJ-Z-811fqTddJ72w-WA