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8051 (Create Speed for Stepper Motor)

Sharril Rizuan

Hi Everyone,

I have searched everywhere on how can I create stepper motor speed. Can anyone show me the formula of creating the speed(frequency)?. Thanks!

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    Speed of stepper motor is normally in rpm - revolutions per minute.
    The stepper motor needs x steps to rotate one turn.

    So n rpm * x steps is number of ticks/minute.
    Divide by 60 and you get number of steps/second.
    That's the frequency of the steps.

    So for 600 rpm and 40 steps/revolution you need 24000 steps/minute or 400 steps/second.
    400 steps/second is 400Hz. Or 2.5ms / step.

    If you then needs to perform multiple pin changes during one step, then you might need to multiply the frequency correspondingly.