// Define the pins used for the motor control and speed
const int speedPin = 11;
const int dir1 = 9;
const int dir2 = 10;

// Define the pin used for the potentiometer
const int potPin = A0;

void setup() {
  // Initialize the serial communication and set pin modes
  Serial.begin(9600);
  pinMode(speedPin, OUTPUT);
  pinMode(dir1, OUTPUT);
  pinMode(dir2, OUTPUT);
}

void loop() {
  // Read the value of the potentiometer
  int potValue = analogRead(potPin);
  
  // Map the potentiometer value to a motor speed between 0 and 255
  int motorSpeed = map(potValue, 0, 1023, 0, 255);
  
  // Print the current motor speed to the serial monitor
  Serial.print("Current speed: ");
  Serial.println(motorSpeed);
  
  // Determine the motor direction based on the potentiometer value
  if (potValue < 512) {
    // Set the motor direction to forward
    digitalWrite(dir1, LOW);
    digitalWrite(dir2, HIGH);
    Serial.println(" DC motor rotates in FORWARD direction");
  } else {
    // Set the motor direction to reverse
    digitalWrite(dir1, HIGH);
    digitalWrite(dir2, LOW);
    Serial.println(" DC motor rotates in REVERSE direction");
  }
  
  // Apply the PWM signal to the motor speed pin
  analogWrite(speedPin, motorSpeed);
  
  // Wait for a short period of time
  delay(50);
}