I started out working on a different thing, but that didn’t work out, as I was missing a few things. But as I was looking for those things, I found something else. I ordered this RS-I RS232 prototyping kit a long time ago— for what I don’t even remember. But, it seemed like the perfect time to put it together.
I’m thinking that I can combine it with the VFD display (if I ever get that working.)