   int button4 = digitalRead(PIN_BUTTON_4);
 
   // boutton 1
-  if (button1 == HIGH) { 
-    Serial.println("[ BUTTON ]:[ B1 ]");
-  }
-  
+  if (button1 == HIGH) {
+    Serial.println("BUTTON --> B1");
+  }
+
   // boutton 2
-  if (button2 == HIGH) { 
-    Serial.println("[ BUTTON ]:[ B2 ]");
+  if (button2 == HIGH) {
+    Serial.println("BUTTON --> B2");
   }
 
   // boutton 3
-  if (button3 == HIGH) { 
-    Serial.println("[ BUTTON ]:[ B3 ]");
+  if (button3 == HIGH) {
+    Serial.println("BUTTON --> B3");
   }
 
   // boutton 4
-  if (button4 == HIGH) { 
-    Serial.println("[ BUTTON ]:[ B4 ]");
+  if (button4 == HIGH) {
+    Serial.println("BUTTON --> B4");
   }
 }
 

void getPotentiometerValue()
{
  int value;
  
  // récupére la valeur du potentiometre
  value = analogRead(PIN_POTENTIOMETER);


  tag=tag.substring(1,13);

  while(tag.length() > 0) {
    Serial.print("RFID --> ");
    Serial.println(tag);
    tag = "";
  }
  delay(500);
