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Supports external power for motors to prevent Arduino damage.

The is one of the most widely used open-source robotics hardware modules on the market. Based directly on the classic Adafruit Motor Shield V1 design, this board simplifies multi-motor control by stacking cleanly on top of an Arduino Uno or Mega.

9V batteries have very high internal resistance and low capacity. They cannot supply the current spikes motors need, leading to poor performance and fast battery drain.

The HW-130 is an architecture built around and a 74HC595 8-bit serial-to-parallel shift register . This combination allows you to multiplex your pins, controlling a high volume of inductive loads while conserving precious Arduino I/O. Adafruit Motor Shield

AF_Stepper stepper(200, 2); // 200 steps/revolution, motor port #2

Connect a small DC motor to the M1 or M2 terminal block.

// Stop both digitalWrite(IN1, LOW); digitalWrite(IN2, LOW); digitalWrite(IN3, LOW); digitalWrite(IN4, LOW);

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delay(1000);

Up to 4 bi-directional DC motors, 2 stepper motors (unipolar/bipolar), or 2 servo motors. Operating Voltage: 4.5V to 16V for motors (logic requires 5V). Current Handling: