Pablo G. Lucio - Arduino and TouchDesigner Tutorial - Ultrasonic Sensor

// ULTRASONIC SENSOR
int TRIG = 3;
int ECHO = 2;
int DURATION;
int DISTANCE;



void setup() {

  // ULTRASONIC SENSOR
  pinMode(TRIG, OUTPUT);
  pinMode(ECHO, INPUT);

  // SERIAL
  Serial.begin(9600);

}


void loop() {

  digitalWrite(TRIG,HIGH);
  delay(1);
  digitalWrite(TRIG,LOW);
  DURATION = pulseIn(ECHO,HIGH);
  DISTANCE = DURATION / 58.2;

  if(DISTANCE > 0 && DISTANCE < 50 ){
    Serial.println(DISTANCE);
    delay(100);
  }

}