void loop () {
  // send data only when you receive data: 83 84 65 82 84
        if (Serial.available() > 0) {
                // read the incoming byte:
                incomingByte = Serial.read();
                /*
                check the bytes
                */
        }
  // blink the LED that number
    for(int i=0; i<val; i++) {
     digitalWrite(ledPin,HIGH);
     delay(150);
     digitalWrite(ledPin, LOW);
     delay(150);
   }
}