const int voltageSensorPin = A0; // Analog pin connected to the voltage sensor
const float voltageDividerFactor = 3.9; // Voltage divider factor used to calibrate the sensor

void setup() {
  Serial.begin(115200); // Initialize serial communication
}

void loop() {
  // Read the raw ADC value from the voltage sensor
  int sensorValue = analogRead(voltageSensorPin);

  // Convert the raw ADC value to voltage
  float voltage = sensorValue * (3.3 / 4095) * voltageDividerFactor; // ESP32 ADC resolution is 12 bits (4095 levels)

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

  delay(1000); // Wait for 1 second before taking the next reading
}