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DRV8886ATEVM: Not running in full step

Deborah Curtis
Prodigy 115 points
Part Number: DRV8886ATEVM

Hi, I've been using the DRV8886ATEVM in a stepper motor testbench. Unfortunately, it appears to have stopped having the ability to run in full step mode. When I set it to run in full step, it runs in 1/8 step. I am using the app that was designed to run it. Any ideas?

BR, Deborah

  • 0
    TI__Guru 55615 points

    Deborah,

    I wonder if the connection to the "M0" pin has somehow come loose.  

    If M0 pin is HIZ, you will be in 1/8 step.  If all you desire is full step, just take a blue wire and connect this pin to GND.  

    Regards,

    Ryan