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

  if (data[0] != 0){
    if (id == 0x0) {
      if (data[0] == B00000011) {
        Serial.write(handshakeMessage, 4);
      }
      else if (data[0] == B00000101) {
        id = data[1];


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

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

int ledPin = 13;

