It’s good to have a generic stepper board – A lot of instruments can be made using a stepper motor, with just some tweaks on the firmware. This board is for using ubiquitous Switech X25.168 steppers, used on car instruments. They can be found on ebay for about 4$ piece, and they are very easy to use. I was not so happy on driving them directly from a microcontroller output due to they being an inductive load, but after some testing it seems it’s safe not to use a flyback diode. I can always add them later on, once I destroy a couple microcontrollers 😉


This board is designed to fit inside an instrument enclosure, being only 45x45mm and directly supporting stepper and 2 lighting LEDs. Will post some more pictures showing the prototype.


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Categories: Stepper


Giorgio · November 24, 2011 at 8:48 am

Well done Francisco 🙂

Witch kind of micro do you use ?



Andrew · May 6, 2013 at 12:18 am

Hi there,

Could you tell me if you will make these boards available to the public? I would love a few for the cockpit (King Air) that I am building. Would it be able to interface these for use with FSX instead of X-plane?

Kind regards,


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