#define threshold 512
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(A0, INPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int adcValue = analogRead(A0);//read the ADC value(0-1023) By default 10 bit ADC is used in arduino.
  float voltage = adcValue * (5.0/1023); //converts to voltage
  Serial.print("ADC value:");
  Serial.println(adcValue);
  Serial.print("Voltage:");
  Serial.println(voltage);
  if(adcValue > threshold){
    digitalWrite(13, HIGH);
  }
  else digitalWrite(13, LOW);
  delay(1000); // this speeds up the simulation
}