1 /* Ultrasonic rilevatore distanza
3 Rilevatore distanza minore di 5cm.
6 HC-SR04 Ping distance sensor
7 VCC to arduino 5v - GND to arduino GND
21 Serial.begin(9600); // Need for distanceMonitor
25 if (distanceCheck()) {
26 digitalWrite(13,HIGH);
30 Serial.println(distanceMonitor());