With just one shield, you can control up to four DC motors (for a 4-wheel drive robot), or two stepper motors, and two servos, all simultaneously.
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | No power to shield, incorrect wiring, or missing library | Check EXT_PWR connection, ensure motor is in M1/M2, and verify AFMotor library is installed | | Motors spin but Arduino doesn't boot/resets | Motor power brown-out | Remove PWR jumper, ensure external power can supply enough current, separate motor and logic supplies | | Weird/unexpected motor behavior | Shift register not powered or damaged | Ensure shield is seated properly, check if 74HC595 chip is getting 5V, try a different Arduino pin | | Bluetooth module not pairing | Wrong baud rate, power issues | Check baud rate (usually 9600 or 38400), ensure BT module is getting enough current (use external 5V regulator if needed) | | Servo jitters randomly | Servo power drawn from Arduino 5V rail | Power servos from a separate 5V regulator connected directly to battery pack | hw 130 motor control shield for arduino datasheet better
Unlike using a standalone L298N module, the HW-130 is a true shield that stacks directly onto your Arduino. There is minimal wiring, which significantly reduces the chance of a wiring mistake. With just one shield, you can control up
#include <AFMotor.h>
Carefully align the pins and mount the HW-130 shield on top of your Arduino Uno. #include <AFMotor