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Author Topic: DRV8834 Tracking Issue  (Read 85 times)

ntk.thava

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DRV8834 Tracking Issue
« on: July 11, 2020, 16:21:14 »

I am facing an intermittent tracking problem with my DYI ASTROEQ  using the DRV8834.
In order to achieve the 1/4 and    1/32 step, I did not connect M0 in order to let it float. When I track, at times the tracking is ok but some times the RA moves faster and some times it moves slower. Could this be a result of not connecting the M0?


Looking forward to hear form anyone.

Thank you.
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ecc2000

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Re: DRV8834 Tracking Issue
« Reply #1 on: July 11, 2020, 16:48:33 »

Hello,

All the information on this is here:

https://www.pololu.com/product/2134

Pierre
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ntk.thava

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Re: DRV8834 Tracking Issue
« Reply #2 on: July 11, 2020, 17:59:47 »

Thanks for your swift reply.
I have went through it.

As for using the DRV8825 , is the fast decay needed to be tied to 5V to have a stable tracking?
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ecc2000

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Re: DRV8834 Tracking Issue
« Reply #3 on: July 11, 2020, 20:00:25 »

???

Just connect the 8825 as shown in the diagram and there is no problem, just adjust the current for the stepper motor correctly !

Pierre
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ntk.thava

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Re: DRV8834 Tracking Issue
« Reply #4 on: July 12, 2020, 13:30:00 »

Many thanks !
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