A4988, DRV8825 Stepper Motor Driver

A4988

• Vref Voltage Formula: Vref = Current Limit x 8 x R_Sense

• Stepper Resolution Adjustment

DRV8825

• Vref Voltage Formula: Vref = Current Limit x (5 x R_Sense), in general Vref = Current Limit / 2

• Stepper Resolution Adjustment