Stepper Motor Magic

by goldenshuttle in Circuits > Reuse

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Stepper Motor Magic

stepper sankyo (2).JPG
stepper sankyo (3).JPG
There is something magical about motors , even worse, stepper motors..You just cannot throw them away. Even a dead one can be a good source or magnets.
I have this Sankyo 5-pin stepper. I do not remember whether I took it from a large hard drive or a printer. But it is time to find a job for this handsome rotator.
But first I must identify the pins. Web search did not give much except one guy who posted it for sale on almost every website you can imagine.

stepper sankyo (4).JPG
sankyo stepper 5 pin.bmp
stepper sankyo (1).JPG
The motor has 5 pins, colors were in sequence RED- YELLOW -ORANGE -BLACK- BROWN as shown in the picture.
the resistance measurement matrix is shown below together with my interpretation of how the coils are arranged inside.

I plan to first try to rotate it by feeding a ULN2003 driver IC from a CD4017 counter and wish me luck.


If anyone has any comment or correction, I will be thankful.