diff --git a/IOT/config.ini b/IOT/config.ini
index 11acf53..17d9e3f 100644
--- a/IOT/config.ini
+++ b/IOT/config.ini
@@ -16,5 +16,8 @@ build_flags =
 
     -D API_HOST=\"iot.epi.cb85.software\"
 
+    -D ULTRA_SOUND_TRIGD=12
+    -D ULTRA_SOUND_ECHO=13
+
     -D EXAMPLE_NUMBER=69
 
diff --git a/IOT/platformio.ini b/IOT/platformio.ini
index c06a691..494606e 100644
--- a/IOT/platformio.ini
+++ b/IOT/platformio.ini
@@ -38,6 +38,7 @@ monitor_flags =
 lib_deps =
     bportaluri/WiFiEsp@^2.2.2 ; gestion des commande 'AT' de l'esp01
     arduino-libraries/Arduino_JSON@^0.2.0 ; gestion des json
+    ericksimoes/Ultrasonic@^3.0.0 ; lib capteur ultra son
 ;    example:
 ;    erropix/ESP32 AnalogWrite@^0.2