AZ-Delivery HC-SR04 Bedienungsanleitung Seite 7

Sketch-Beispiel:
const int echoPin = 2;
const int trigPin = 3;
long duration;
int distance;
void setup() {
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
Serial.begin(9600);
}
void loop() {
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = duration * 0.034 / 2;
Serial.print("Distance:
Serial.println(distance);
delay(1000);
}
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