Feature:Five different step resolutions: full-step, half-step, quarter-step, eighth step and sixteenth step, with output drive capability up to 35 V and ±1.2 AAdjustable current control allows you to use the potentiometer to set the maximum current output, allowing you to use a voltage higher than the rated voltage of the stepper motor to achieve a higher step rateNo phase sequence table, high frequency control line or complicated programming interfaceOver-temperature thermal shutdown, under-voltage lockout and cross-current protectionGround short circuit and load short circuit protectionConverter is the key to easily realize A4988. Just input a pulse at the STEP input terminal to drive the motor for one microstep.Warn:Connecting or disconnecting the stepper motor while the drive is energized will damage the drive.Package Included:8 x A4988 stepper motor driver module