diff --git a/src/hoverserial.ino b/src/hoverserial.ino
index d90e320..05e8229 100644
--- a/src/hoverserial.ino
+++ b/src/hoverserial.ino
@@ -74,13 +74,18 @@ SerialFeedback NewFeedback;
 // ########################## SETUP ##########################
 void setup() 
 {
-  Serial.begin(SERIAL_BAUD);
-  if (Serial) {
-  	Serial.println("Hoverboard Serial v1.0");
-  }
-    
-  Serial1.begin(HOVER_SERIAL_BAUD);
-  pinMode(LED_BUILTIN, OUTPUT);
+	Serial1.begin(HOVER_SERIAL_BAUD);  // RX, TX from arduino to TX RX on hoverboard board. ! be carreful 3v3 
+  	pinMode(LED_BUILTIN, OUTPUT);
+
+	pinMode (2,INPUT_PULLUP); // pin 2 to GNd to start
+	while (digitalRead(2))
+	{
+		/* code */
+	}
+  	Serial.begin(SERIAL_BAUD);
+  	if (Serial) {
+		Serial.println("Hoverboard Serial v1.0");
+	}
 }
 
 // ########################## SEND ##########################