int LEDPin = 16;        // LED connected to pin 16
int potentiometerPin = 34;    // Potentiometer connected to pin 34 (analog input)
int val = 0;            // Variable to store potentiometer reading

void setup() {
  Serial.begin(9600);   // Start serial communication at 9600 baud
  pinMode(LEDPin, OUTPUT);  // Set LED pin as an output
}

void loop() {
  val = analogRead(potentiometerPin); // Read analog value from potentiometer 
  int brightness = val / 4;           // Scale potentiometer value (approx 0–1023) to match analogWrite range (0–255)
  analogWrite(LEDPin, brightness);    // Write PWM value to LED for brightness control

  // Classify potentiometer input into 3 levels based on value
  if (val < 341) {                    // If potentiometer value is less than 341 → Low
    Serial.println("PM: LOW");
  } else if (val < 682) {             // If potentiometer value is between 341 and 681 → Medium
    Serial.println("PM: MEDIUM");
  } else {                            // If potentiometer value is 682 or higher → High
    Serial.println("PM: HIGH");
  }

  delay(200);  // Delay for 200 milliseconds before next loop iteration
}