// Motor control pins
int in1 = 2;  // IN1 of the H-bridge for motor 1
int in2 = 3;  // IN2 of the H-bridge for motor 1
int in3 = 4;  // IN3 of the H-bridge for motor 2
int in4 = 5;  // IN4 of the H-bridge for motor 2
int enA = 9;  // Enable pin for motor 1 (ENA)
int enB = 11; // Enable pin for motor 2 (ENB)

void setup() {
  // Define motor control pins and speed control pins as outputs
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(in3, OUTPUT);
  pinMode(in4, OUTPUT);
  pinMode(enA, OUTPUT);
  pinMode(enB, OUTPUT);
}

void loop() {
  // Move motors 1 and 2 forward
  digitalWrite(in1, HIGH);
  digitalWrite(in2, LOW);
  digitalWrite(in3, HIGH);
  digitalWrite(in4, LOW);
  analogWrite(enA, 150); // Adjust the value (0-255) for desired speed
  analogWrite(enB, 150); // Adjust the value (0-255) for desired speed
  delay(2000);

  // Stop motors 1 and 2 for 2 seconds
  digitalWrite(in1, LOW);
  digitalWrite(in2, LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4, LOW);
  analogWrite(enA, 0); // Set speed to 0 to stop
  analogWrite(enB, 0); // Set speed to 0 to stop
  delay(2000);

  // Move motors 3 and 4 forward
  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
  digitalWrite(in3, LOW);
  digitalWrite(in4, HIGH);
  analogWrite(enA, 150); // Adjust the value (0-255) for desired speed
  analogWrite(enB, 150); // Adjust the value (0-255) for desired speed
  delay(2000);

  // Stop motors 3 and 4 for 2 seconds
  digitalWrite(in1, LOW);
  digitalWrite(in2, LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4, LOW);
  analogWrite(enA, 0); // Set speed to 0 to stop
  analogWrite(enB, 0); // Set speed to 0 to stop
  delay(2000);
}