diff --git a/capteurs/sketchDistanceSerial-Ultrasonic.ino b/capteurs/sketchDistanceSerial-Ultrasonic.ino
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+// Ultrasonic - Library for HR-SC04 Ultrasonic Ranging Module.
+// Rev.4 (06/2012) - J.Rodrigo ( www.jrodrigo.net ) - www.ardublog.com
+// more info at https://www.abonnel.fr/electronique/lois-et-composants/500-capteur-de-distance-ultrasons#principe
+
+#include "Ultrasonic.h"
+
+#define echoPin 2 // attach pin D2 Arduino to pin Echo of HC-SR04
+#define trigPin 3 //attach pin D3 Arduino to pin Trig of HC-SR04
+
+Ultrasonic sensor(trigPin,echoPin); // Trig et Echo
+ 
+// defines variables
+int distance; // variable for the distance measurement
+
+void setup() {
+  Serial.begin(9600);trigPin as an OUTPUT
+  pinMode(echoPin, INPUT); // Sets the echoPin as an INPUT
+  Serial.begin(9600); // // Serial Communication is starting with 9600 of baudrate speed
+  Serial.println("Ultrasonic Sensor HC-SR04 Test"); // print some text in Serial Monitor
+  Serial.println("with Arduino UNO R3 and Ultrasonic.h");
+}
+
+void loop () {
+  distance = sensor.Ranging(CM);  // CM or INC
+  Serial.print("Distance: ");
+  Serial.print(distance);
+  Serial.println(" cm");
+
+  delay(100); // 100 ms
+}