             if(serialReadTemp != VAL_END_SYNC){
                 int serialReadTemp = Serial.read();
                 
-                if (serialReadTemp == 52){
+                if (serialReadTemp == 52){      // 52 is Hexa Symbol for 4
                     isSync = true;
                 }
-                digitalWrite(LED_PIN, HIGH);   // turn the LED on (HIGH is the voltage level)
-                delay(100);               // wait for a second
-                digitalWrite(LED_PIN, LOW);    // turn the LED off by making the voltage LOW
-                delay(100);               // wait for a second
+                digitalWrite(LED_PIN, HIGH);    // turn the LED on
+                delay(100);                     // wait for a second
+                digitalWrite(LED_PIN, LOW);     // turn the LED off
+                delay(100);                     // wait for a second
             }
         }
         else{


// ######## DEF ########
#define LONGPRESS_LEN    40         // Min nr of loops for a long press
#define DELAY            20        // Delay per loop in ms
#define DELAY_BLINK      50000
// ######## VAR ########
int buttonState = 0;                // variable for reading the pushbutton status

void loop(){
    int eventResult = handle_button();
    int serialReadTemp = Serial.read();
    if(serialReadTemp == 51)            // 51 is Hexa symbol for 3
    {
        turnBlink();
    }
    else if(serialReadTemp == 48)       // 48 is Hexa symbol for 0
    {
      turnOff();                
    }
    switch(eventResult){
        case EV_NONE:               // if nothing append
