Bipolar stepper motor and PIC

Hey guys, I lost my micro-controller partner right after the proposal, so right now I pretty much need to finish the subsystem from scratch. I was just wondering if anyone uses a 10-step bipolar stepper motor. I had a lot of trouble finding a firing sequence for it. Any other tips or help to drive this motor would be awesome too.

Also just a heads up that i'll be probably very annoying the next few weeks bombarding you guys with questions.

Thanks

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:08am

This web page helped me: http://electrosome.com/stepper-motor-pic-microcontroller/

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:09am

I am using a Bipolar motor (not sure what you mean by a 10-step one?). Are you trying to write code to drive it? If so, you are simply writing code to blink 4 different LED lights - in reality, each blink sends a pulse and you need 4 pulses for 1 step. Then you need to control the speed of this blinking (control speed of rotation) and how many blinks you send (amount you rotate it)

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:09am

So figure out how to blink an LED and a delay loop or timer loop and the rest will fall in place

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:09am

can you also tell us the frequency at which we energize the coils or in other words the frequency of the firing sequence

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:09am

that would probably depend on how fast you want the motor to turn

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:09am

I meant the motor runs smoothly at certain frequencies but gives a jerky motion in others

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Permalink Reply by Kenny Kim on May 1, 2014 at 5:09am

Hmm;yeah it's a good range though; you can try using the motor driver board to figure out the upper and lower limits and just use that