void setup() {
  // Initialize serial communication at 9600 baud rate
  Serial.begin(9600);

  // Configure A2 as an input (optional, as analogRead handles this)
  pinMode(A2, INPUT);
}

void loop() {
  // Read the raw analog value from A2 (0-1023)
  int sensorValue = analogRead(A2);

  // Convert the raw value to voltage (assuming 5V reference voltage)
  float voltage = sensorValue * (5.0 / 1023.0);

  // Print the voltage to the serial monitor
  Serial.print("A2 Voltage: ");
  Serial.print(voltage);
  Serial.println(" V");

  // Wait for a short period before the next reading
  delay(500); // 500 ms
}