// DC Motor Control with L298N Driver and Arduino
//
// Connections:
//   ENA  → Pin 9 (PWM)
//   IN1  → Pin 8
//   IN2  → Pin 7
//   Motor Power  → 12V (External Power Supply)
//   GND (Motor + Arduino) → Common Ground

// Pin definitions
const int enA = 9;   // PWM pin to control motor speed
const int in1 = 8;   // Motor direction control
const int in2 = 7;   // Motor direction control

void setup() {
  // Set motor control pins as outputs
  pinMode(enA, OUTPUT);
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
}

void loop() {
  // Rotate motor forward
  digitalWrite(in1, HIGH);
  digitalWrite(in2, LOW);
  analogWrite(enA, 200);  // Set speed (0-255)
  delay(2000);            // Run for 2 seconds

  // Rotate motor in reverse
  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
  analogWrite(enA, 200);  // Same speed in reverse
  delay(2000);            // Run for 2 seconds

  // Stop the motor
  digitalWrite(in1, LOW);
  digitalWrite(in2, LOW);
  delay(1000);            // Wait for 1 second
}