So here is the unipolar stepper motor controller committed to a PCB. It’s my first PCB that I’ve made and populated from scratch. I used the toner-transfer method and then drilled out the holes with a small drill. I’ve got a programmer on there so I can upgrade the firmware if needed. The connector for power and a serial command is a bit of a hassle at the moment but will fit in with my grand scheme! Note: this need regulated power, which I’m assuming will come from a master board (the supplier of the serial). This makes sense as I’ll have multiple (modular) controller boards.