How to Use L298N Motor Driver Controller Board Module Stepper Motor: Examples, Pinouts, and Specs

The L298N Motor Driver Controller Board Module by HiLetgo is a versatile and robust dual H-bridge motor driver integrated circuit (IC) designed to control two DC motors or one stepper motor. It is widely used in robotics, DIY projects, and various electronic applications where precise motor control is required. The L298N allows for independent control of speed and direction for each motor, making it an ideal choice for projects that require complex movements.

• Robotics
• CNC machines
• Automated guided vehicles
• Home automation systems
• DIY electronic projects

• Operating Voltage (Logic): 5V
• Operating Voltage (Motor Supply): 5V-35V
• Motor Output Current (Max Continuous): 2A per channel
• Peak Output Current (Non-Repetitive): 3A
• Power Dissipation (Max): 25W

1. Connect the motor power supply to the VS and GND pins, ensuring that the voltage is within the specified range.
2. Connect the logic power supply to the VSS and GND pins.
3. Connect the motors to the OUT1/OUT2 and OUT3/OUT4 pairs.
4. Apply PWM signals to ENA and ENB for speed control.
5. Use digital signals to IN1, IN2, IN3, and IN4 to set the direction of the motors.

• Always ensure that the power supply voltage does not exceed the maximum rating.
• Use a separate power supply for the motors and logic when currents are high to prevent noise issues.
• Incorporate flyback diodes if using inductive loads to protect the driver from voltage spikes.
• Avoid running the motor driver at its maximum current rating for extended periods to prevent overheating.

• Motor not running: Check power supply connections and ensure that the input signals to IN1-IN4 are correct.
• Overheating: Ensure that the current draw is within the limits and consider adding a heat sink if necessary.
• Inconsistent motor speed: Verify that the PWM signal is stable and that the power supply can handle the current draw.

• Double-check wiring and solder joints for any loose connections or shorts.
• Use a multimeter to verify the voltage levels at the power inputs and outputs.
• Test the input control signals with an oscilloscope to ensure they are being received correctly by the L298N.

// Example code to control a DC motor with L298N Motor Driver and Arduino UNO

const int motorPin1 = 8; // IN1 on the L298N
const int motorPin2 = 9; // IN2 on the L298N
const int enablePin = 10; // ENA on the L298N

void setup() {
  pinMode(motorPin1, OUTPUT);
  pinMode(motorPin2, OUTPUT);
  pinMode(enablePin, OUTPUT);
}

void loop() {
  // Set motor direction clockwise
  digitalWrite(motorPin1, HIGH);
  digitalWrite(motorPin2, LOW);
  
  // Set speed to maximum
  analogWrite(enablePin, 255);
  
  delay(2000); // Run for 2 seconds
  
  // Set motor direction counterclockwise
  digitalWrite(motorPin1, LOW);
  digitalWrite(motorPin2, HIGH);
  
  delay(2000); // Run for 2 seconds
  
  // Stop the motor
  digitalWrite(motorPin1, LOW);
  digitalWrite(motorPin2, LOW);
  
  delay(2000); // Stop for 2 seconds
}

Note: The above code is a simple demonstration of controlling a DC motor's direction and speed using the L298N Motor Driver. For more complex applications, additional code and hardware setup may be required.