... 3A drive current settings for each axis - 25%,50%,75%,100% of full current can be set for different stepper motors * ... 1.5A-3A version, it's specially designed for stepper motors with rated current from 1.5A to 3A, it ... 's NOT compatible with stepper motors with rated current below 1.5A or above 3A! ... If the rated current your stepper motors is below 1.5A, you can choose the 0 ...