I have had some success refilling vintage plotter pens for the Casio, Sharp, and Radio Shack printer plotters. After quite a few trials and errors, I might have finally solved the refill challenge.
Tag: Casio FP-100
I adapted the PB-770 maze program for the PB-1000 and created three types of printouts for the randomly generated mazes.
I found a Casio PB-1000 and an MD-100 on an auction site. I have spent a few months with this pocket computer and it has become one of my favourites.