First post, by Hamby
Pardon my ignorance, but I don't know much about Raspberry Pi or the other SBCs. However, I keep hearing people talking to them via their "gpio" pins. I've read where it's used for everything from communicating with CNC machinery, talking to data collection devices, even driving an LCD display.
I was wondering if there's any kind of ISA or PCI interface card to GPIO? On the one hand for communicating with a raspberry pi from a vintage PC, or doing the other things I listed above? The idea of driving an LCD or LED display from one of my vintage PCs particularly interests me (such as a case display for CPU speed/temp/personal message).