const int potPin = A0;  // Analog pin connected to the potentiometer
const int ledPin = 9;   // Digital pin connected to the LED

void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int potValue = analogRead(potPin);     // Read the value from the potentiometer
  int brightness = map(potValue, 0, 1023, 0, 255); // Map the potentiometer value to LED brightness (0 to 255)

  analogWrite(ledPin, brightness);  // Set the LED brightness based on the potentiometer value
}