Is it necessary to setup the Vref for DRV8825 and nema motors?

Arduino ASCOM Rotator multiple designs

Brought to you by: brownrb

Is it necessary to setup the Vref for DRV8825 and nema motors?

Forum: General Discussion

Creator: Julio Hornos

Created: 2024-11-20

Updated: 2024-11-20

Julio Hornos - 2024-11-20

I am using the PBC DRVBRD_DRV8825 v103 with the Nema motor 14HM11-0404S.
I have read in different places that it is necessary to adjust the Vref to limit the maximum current to the Nema motor. In my case, the motor accepts 0,4 A per phase.
For DRV8825 the Vref=Curren_limit/2
For my motor Vref=0,4/2=0,2 V
Are any of you doing that? I can't see any reference in myRotator user guide

Thanks

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

brownrb - 2024-11-20

https://drive.google.com/file/d/1PwB-Fc0h8xVm0SKkfcNUSXUq2ZtLhYw-/view?usp=drive_link

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

Log in to post a comment.