I want to control a stepper motor, and I decided to try the DRV8825. I ended up getting this card: Stepper_Motor_Shield_For_Arduino_DRV8825__SKU_DRI0023-DFRobot
I also got this (Just to reach free shipping): SilentStepStick TMC5160 Stepper motor driver - Watterott electronic
None of them have a pot to limit the current. And every guide explains limiting with a pot.
What are my options? (Using a Uno if that matters)