int sensorPin = A0;      // Potentiometer connected
int ledPin = 9;          // LED connected to pin 9
int threshold = 512;     // Threshold level

void setup() {
  pinMode(ledPin, OUTPUT);   // Set LED pin as output
  Serial.begin(9600);        // Initialize serial communication
}

void loop() {
  int sensorValue = analogRead(sensorPin);   // Read sensor value

  if (sensorValue > threshold) {
    digitalWrite(ledPin, HIGH);   // Turn on LED
  } else {
    digitalWrite(ledPin, LOW);    // Turn off LED
  }

  Serial.print("Sensor Value: ");
  Serial.println(sensorValue);    // Print sensor value

  delay(100);   // Delay for stability
}