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Powerfull unipolar stepper motor controller

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vfurlan

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Hi all,

I built a unipolar stepper motor controller using L297 and quad darlington array. I found out that the arm the motor is controlling, jerks to much.
So I think of making a micro step controller. L297 does not support microstepping. Can you suggest another controller? I do not need driver, I have darlington array, (my motor is to strong for chip drivers). I need a UNIPOLAR MICROSTEPPING replacement for l297.

Thank you
 

No, I need only a chip as a L297 replacement, if it exist.
 

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