Overview Dual stepper motor driver shield can drive 2 stepper motors at the same time by Arduino. It can work with the power supply from 4.75V to 30V. High accuracy controlling can be supported by Arduino for CNC milling machine. It uses the same stepper motor driver chip as EasyDriver so you can use it as 2 EasyDriver modules on board. And there are all pins breakout as 3PIN electronic brick/ sensor brick interface. Hardware Pin Description D0 UART_Rx D1 UART_Tx D2 X Step D3 X Direction D4 X MS1 setting D5 X MS2 setting D6 Y Step D7 Y Direction D8 Y MS1 setting D9 Y MS2 setting D10 - D11 - D12 - D13 - A0 ENY A1 SLEEPY A2 ENX A3 SLEEPX A4 IIC_SCL A5 IIC_SDA Version 1.0 Compatible Mainboard Leaf maple Arduino Deumlanove/UNO Arduino MEGA ChipKit MAX32 ChipKit UNO32 FEZ Panda II Freeduino Iteadmaple Iteaduino Iteaduino ADK Iteaduino BT Iteaduino MEGA 2560 Simple Cortex Seeeduino Seeduino MEGA Shield Functions Driver Operation Level Digital 3.3V Digital 5V Stackable Yes