28BYJ-48 (bipolar modified) not moving

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hi,
i modified 28byj-48 bipolar.
i using a4988 driver drive it.

i had motor working fine reason motor making sharp sound , not moving.

i checked voltage , current form chip , getting 5v required drive motor.
i measured current on 1 of coil , got 100milli amp.

i tried turning potentiometer on a4988 still motor didnt move.

any idea can try debug this?

you try following directions in "how use forum" post.
that way can hope informed help.


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > 28BYJ-48 (bipolar modified) not moving


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