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coolm8

UMO: Troubles with DRV8825 stepper driver

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Posted · UMO: Troubles with DRV8825 stepper driver

Hi,

Recently i hae modified my UMO with new Electronics and now i switched to DRV8825 stepper drivers. For X and Y i switched to 1/32 steps instead of original 1/16. For that i doubled the XY_STEPS in the Marlin Configuration. Now the Y-axis is working fine but the X-Axis isn't. When i try to move the X-Axis manually in OctoPrint, it steps quite short for 10mm and for 100mm it sometimes brings only a high pitched noise or it travels along the whole axis until it hits the end stop.

I tried switching den Drivers from Y to X and changed the cabling. But the problem keeps ant the the Place where the Driver for the X-Axis is mounted. So it is definitely no Motor nor a Driver problem. Am i missing something in Marlin? XY_STEPS is obvioulsy being used for X and Y.

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Posted · UMO: Troubles with DRV8825 stepper driver

Something is broken on the Ultiboard 1.5.x, I would say. You did exactly the tests I also would have done.

Are the set currents reasonable?

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Posted · UMO: Troubles with DRV8825 stepper driver

Well, both the drivers of the Y- and X-Axis have the voltage set to 0.5V. It seems to me that there is a problem with the Board. I'm not using the Ultiboard anymore, I've switched to RUMBA previously and with the old steppers at 1/16 stepps, it all just worked fine.

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