diff --git a/Startsignal_Test/Startsignal_Test.ino b/Startsignal_Test/Startsignal_Test.ino
index f1ad05d..772a3fe 100644
--- a/Startsignal_Test/Startsignal_Test.ino
+++ b/Startsignal_Test/Startsignal_Test.ino
@@ -6,21 +6,23 @@ int melody[] = {
 
 
 void setup() {
-  // put your setup code here, to run once:
-  /*delay(1000);
+  // play startsignal
+  delay(1000);
   tone(6, melody[0], 200);
   delay(1000);
   tone(6, melody[0], 200);
   delay(1000);
-  tone(6, melody[1], 100);*/
+  tone(6, melody[1], 100);
+
+  //set all LEDS as OUTPUT
   pinMode(A0,OUTPUT);
   pinMode(A1,OUTPUT);
   pinMode(A2,OUTPUT);
   pinMode(A3,OUTPUT);
-  Serial.begin(9600);
 }
 
 void loop() {
+  //test all LEDS
   int pins[] = {A0, A1, A2, A3};
   for(int i=0;i<4;i++){
     Serial.println(i, pins[i]);