const int voltageSensorPin = 0;  //Pin for the voltage sensor
float sensorReading;             //Analog reading from the voltage sensor
const float maxAdcCount = 4095;  //Maximum ADC count (assuming 12-bit ADC)
float voltageValue;              //Calculated voltage based on sensor reading
const float lowVoltageThreshold = 3.0;  //Threshold for low voltage

void reactToLowVoltage()
{
  Serial.println("Alert! Low Voltage");
}

void setup() 
{
  Serial.begin(115200);
  Serial.println("Hello, ESP32-C3!");
  
  //Set the pinMode for the voltage sensor pin to INPUT
  pinMode(voltageSensorPin, INPUT);
}

void loop() 
{
  //Read analog voltage from the voltage sensor
  sensorReading = analogRead(voltageSensorPin);

  //Convert analog reading to voltage value  
  voltageValue = (sensorReading / maxAdcCount) * 3.3 * 2;

  //Check if the voltage is below the low voltage threshold
  if (voltageValue < lowVoltageThreshold)
  {
    reactToLowVoltage();
  }
  else
  {
    Serial.println(voltageValue);
  }

  delay(500);
}