#define SIG 35
#define Bz 13
#define LED_PIN 32
#define LED_PIN2 33

void setup() {
  Serial.begin(115200);
  pinMode(Bz, OUTPUT); 
  pinMode(LED_PIN, OUTPUT);
  pinMode(LED_PIN2, OUTPUT);
}

void loop() {
  unsigned int vSIG = analogRead(SIG);
  char buff[100]; 
  float voltage = volValue(vSIG); 

  sprintf(buff, "Analog Value = %d, Voltage = %.2f", vSIG, voltage);
  Serial.println(buff); 
  delay(10);

  if (vSIG > 3000) { 
    tone(Bz, 1000); 
    digitalWrite(LED_PIN, LOW); 
    digitalWrite(LED_PIN2, HIGH); 
  } else {
    noTone(Bz); 
    digitalWrite(LED_PIN, HIGH);
    digitalWrite(LED_PIN2, LOW);
  }
}

float volValue(unsigned int Analog) {
  return (5.00 * Analog) / 4095.00; 
}