Quick vRef question.

[ckusnierek]

Stepper rated for 2.5a/phase
set vref to 2.5 or 5.0?

If 2.5 then I assume the vref is per phase?

I know not to max out the driver just general driver setting question.

Thanks!

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[kfmut]

If we speaking about Polulu-style drivers based on DRV8825, Vref would be 1.25V, you could check it here https://www.pololu.com/product/2133
Vref could be different because it's depends on some resistor value used in drivers schematic, detailed explanation is given in DRV8825 datasheet https://www.pololu.com/file/download...?file_id=0J590