Stepper Motor Drivers

Stratman · Post by **Stratman** » Fri Sep 30, 2016 1:44 am

Is it possible to change the driver from A4988 to DRV8825 and if so what do I need to change in settings?

Post by **Toy** » Fri Sep 30, 2016 10:33 am

The subdivision of drv8825 is different form A4988.

: subdivision.png (28.87 KiB) Viewed 8523 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.

nounours_2099 · Post by **nounours_2099** » Sun Oct 30, 2016 4:50 pm

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 ?????

Post by **William** » Mon Oct 31, 2016 10:14 am

@nounours_2099
They're the same and all work.

Geeetech

Stepper Motor Drivers

Stepper Motor Drivers

Re: Stepper Motor Drivers

Re: Stepper Motor Drivers

Re: Stepper Motor Drivers