/* Utilisation du capteur Ultrason HC-SR04 */
// définition des broches utilisées
int trig = 8;
int echo = 7;
long lecture_echo;
long cm;
void setup()
{
pinMode(trig, OUTPUT);
digitalWrite(trig, LOW);
pinMode(echo, INPUT);
Serial.begin(9600);
}
void loop()
{
digitalWrite(trig, HIGH);
delayMicroseconds(10);
digitalWrite(trig, LOW);
lecture_echo = pulseIn(echo, HIGH);
cm = lecture_echo / 58;
Serial.print("Distance : ");
Serial.print(cm);
Serial.println(" cm.");
delay(1000);
}