Description: The extension board can be used for carving machine, 3d printer driver expansion board. Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals. Can drive four A4988 stepper motor. A total of 4 way of stepping motor driver module slot, can not into the motor drive 4 road, and every step motor all the way only need two IO mouth, that is to say, 6 IO mouth can be very good management three stepper motor, use rise very convenient. Package Includes: 1 Piecex A4988 Driver Board Note: Only included A4988 Driver Board, the A4988 Stepper Motor Driver is ont included
