: Remove the power jumper to separate logic and motor power. Power the Arduino via USB or the DC jack. Connect the motor supply to the EXT_PWR terminal block.
The shield is designed to "piggyback" directly onto an Arduino Uno or Mega. Motor Connections Screw terminals for DC motors. Stepper 1: Uses M1 and M2 terminals. Stepper 2: Uses M3 and M4 terminals. Servo 1 & 2: Standard 3-pin headers (GND, 5V, Signal). Power Management EXT_PWR Terminals: External power input for motors. hw 130 motor control shield for arduino datasheet free