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Stepper Motor Drivers
Posted: Fri Sep 30, 2016 1:44 am
by Stratman
Is it possible to change the driver from A4988 to DRV8825 and if so what do I need to change in settings?
Re: Stepper Motor Drivers
Posted: Fri Sep 30, 2016 10:33 am
by Toy
The subdivision of drv8825 is different form A4988.
- subdivision.png (28.87 KiB) Viewed 8529 times
After changing a4988 to drv8825, the subdivision will be changed form 1/16 to 1/32,
this means you need to change steps per mm in firmware
refer to this link:
http://prusaprinters.org/calculator/#steppers
the value of steps per mm should be change to double times compared to its initial value.
Re: Stepper Motor Drivers
Posted: Sun Oct 30, 2016 4:50 pm
by nounours_2099
I am sorry, but the subdivision table is not clear.
I want to use DRV8825, at 1/32 step. On the table, there are 3 values
MS1 MS2 MS3 Subdivision
ON OFF ON 1/32 step
OFF ON ON 1/32 step
ON ON ON 1/32 step
Which one is the correct one ?????
Re: Stepper Motor Drivers
Posted: Mon Oct 31, 2016 10:14 am
by William
@nounours_2099
They're the same and all work.