Current limit on DRV8825


I want to use a stepper Motor which runs on 4V with 0.9A. If i want so set the current limit to use it with 24V, do i set the current limit to 0.9A, or do i set it to 0.15A, wich would be the same watt for 24V and 0.9A?


When using stepper motors, the key thing to avoid is exceeding the rated current, so in your case, it is safe to set the current limit as high as 0.9A. For more information on this, please see the first FAQ on the DRV8825 product page.