       start = true;
     }
     
-    if (strcmp(strtok(msg, " "), "ALT") == 0)
+    if (strcmp(strtok(msg, " "), "STOP") == 0)
     {
       Serial.println("STOP");
       start = false;

  if(y > 90) vy = (y - 90);
  
  speedY = 1000 / (vy);
  if(speedY < 15) speedY = 15;
  

  // Mise en route du moteur
  unsigned long currentY = millis();

    if (currentY - previousMillisY >= speedY) 
    {

  if(x < 90) directX = false;
  else directX = true;

  digitalWrite(pinDir, directX); // dirX
  
  // Si ont doit demarer le moteur
  if(x > (setpointX + hysteresis) || (x < setpointX - hysteresis )) 
  { 
    if(x > minX && x < maxX) runX = true; 
    else runX = false;
  }
  else runX = false;
  
