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How to drive STEP Motor 5V Unipolar 5 wires

user4422488
Prodigy 10 points
Other Parts Discussed in Thread: DRV8805, DRV8860

Hi,

I need to drive a cheap step motor, it has 5 wires and tipically is drived by a microcontroller.

I need a controller/driver that move the step motor by a input pulse and direction.

The motor parameters are:

Rated voltage ： 5VDC
Number of Phase 4
Speed Variation Ratio 1/64
Stride Angle 5.625° /64

Could you suggest a component like DRV8805 compatible with 5V 1/64 microstep unipolar motor?

Thanks

  • 0
    TI__Mastermind 26065 points

    Hi, I think the motor you mentioned is not meant a microstep driven motor. The 1/64 usually means after the gear box the axis turn 64 step for one full rotation. This motor is usually driven by half step method, such as 1000 1100 0100 0110 0010 0011 0001 1001 eight step for a full electric cycle.

    DRV8805 can work with a 9V or 12V type of this kind of motor. The other closest one the DRV8860, with the internal PWM function you can use the 5V motor to a 12V power with a fixed internal PWM always ON without initial 100% timing. For example using internal 37.5% or 50% PWM duty to drive the motor should be fine. It is using SPI interface.

    ULN2003 is another option should be fine but without STEP/DIR interface.

    Best regards,