// Pin definitions
const int potPin = A0;        // Pin connected to the potentiometer wiper (middle pin)
const int ledPin = 9;         // Pin connected to the LED

// Variables for potentiometer value
int potValue = 0;             // Variable to store potentiometer value (0 to 1023)
int ledBrightness = 0;        // Variable to store PWM value for LED brightness (0 to 255)

void setup() {
  // Start serial communication for debugging
  Serial.begin(9600);

  // Set LED pin as output
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // Read the potentiometer value (0-1023)
  potValue = analogRead(potPin);

  // Map the potentiometer value to a range of 0 to 255 for PWM (LED brightness)
  ledBrightness = map(potValue, 0, 1023, 0, 255);

  // Set the LED brightness using PWM
  analogWrite(ledPin, ledBrightness);

  // Print the potentiometer value and mapped brightness to the Serial Monitor
  Serial.print("Potentiometer Value: ");
  Serial.print(potValue);
  Serial.print(" -> LED Brightness: ");
  Serial.println(ledBrightness);

  // Small delay to stabilize the reading
  delay(50);
}