// Define the analog pin for the potentiometer
int potPin = A0;
// Define the PWM pin for the LED
int ledPin = 9;

// Voltage reference (in volts) for the Arduino, typically 5V or 3.3V
float voltageReference = 5.0;

void setup() {
  // Begin Serial Communication
  Serial.begin(9600);
  // Set the LED pin as an output
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // Read the potentiometer value (0 to 1023)
  int sensorValue = analogRead(potPin);

  // Map the potentiometer value to PWM range (0 to 255) for LED brightness
  int ledBrightness = map(sensorValue, 0, 1023, 0, 255);
  
  // Set the LED brightness
  analogWrite(ledPin, ledBrightness);

  // Convert the ADC reading to voltage
  float voltage = sensorValue * (voltageReference / 1023.0);

  // Print the values to the Serial Monitor
  Serial.print("Potentiometer Reading: ");
  Serial.print(sensorValue);
  Serial.print(" -> Voltage: ");
  Serial.print(voltage);
  Serial.print(" V");
  Serial.print(" -> LED Brightness: ");
  Serial.println(ledBrightness);

  // Wait a bit before the next reading
  delay(500);
}