Arduino Mega driver for Facit 4070 paper tape punch
Have you got a Facit 4070 paper tape punch? Would you like to add a USB interface to it? This is what you need: an Arduino Mega; A D25 connector; some wires and this code.
Just a quick hack at the moment to get the machine working, might expand it in future if I get really bored.
Look here for details on wiring etc.