Sensor de estacionamento

#include "Ultrasonic.h"

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11,5, 4, 3, 2);

Ultrasonic ultrasonic(10,9);

void setup() {

lcd.begin(16, 2);

lcd.print("testing...");

}

void loop()

{

lcd.clear();

lcd.setCursor(0, 0);

lcd.print(ultrasonic.Ranging(CM));

lcd.print("cm");

if (ultrasonic.Ranging(CM)<20) {

tone(8,1800,ultrasonic.Ranging(CM));

}

else {

noTone(8);

}

delay(100);

}