const int ledPin = 9;        // LED connected to digital pin 9
const int potPin = A0;       // Potentiometer connected to analog pin A0
int potValue = 0;            // Variable to store the potentiometer value
int ledBrightness = 0;       // Variable to store the LED brightness

void setup() {
  pinMode(ledPin, OUTPUT);   // Set the LED pin as an output
  pinMode(potPin, INPUT);    // Set the potentiometer pin as an input
}

void loop() {
  potValue = analogRead(potPin);  // Read the potentiometer value (0-1023)
  ledBrightness = map(potValue, 0, 1023, 0, 255);  // Map the value to a range of 0-255
  analogWrite(ledPin, ledBrightness);  // Set the LED brightness
  delay(10);  // Small delay for stability
}