Stepper Motor magic

Written by: techguru

Picture of Stepper Motor magicstepper 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.

Step 1:

Picture of sankyo stepper 5 pin.bmpstepper 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.

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