Hello! This one has been a long time coming, I have finally been able to get an HP plotter working!
I picked up this HP 7470A recently because I just kind of got a wild hair to make this project a priority. It was a lot less than I thought it would be to get an entry level example and I think being a GP-IB version made it a bit undesirable. It was a lot of fun to check out!
This may not be the final version, I need to get a December supporter list printed and I had this fun idea for it...