 void setup() {
   Serial.begin(9600, SERIAL_8O1);
   pinMode(ledPin, OUTPUT);
+
+  DDRB = DDRB | B00110000;
 }
 
 void loop() {

          byte header = createHeader(comBack);
          byte pingback[4] = { header, productID[0], productID[1], productID[2] };

          Serial.write(pingback, 4);
        }
      }
    }


byte handshakeMessage[] = { B00000101, 0x0, 0x0, 0x10 };

byte productID[] = { 0x0, 0x0, 0x1 };

int ledPin = 13;

