Ok, thanks.

Hi.
I created my first sketch using arduino, but I have a problem because I define manually MY_NODE_ID but it is ignored. When I upload my sketch to arduino and run serial monitor I receive messages:

0;255;3;0;14;Gateway startup complete.
0;255;0;0;17;2.1.1
0;101;0;0;3;

and here is information that mo node id is 0, but in source code I define it as 3. Below is source code:

#define MY_NODE_ID 3
#define MY_GATEWAY_SERIAL

#include <SPI.h>
#include <MySensors.h>


//...
#define RELAY_PIN  5
#define CHILD_ID 101
// ...

MyMessage msg(CHILD_ID, V_STATUS);

void setup()
{
  pinMode(RELAY_PIN, OUTPUT);
}

void presentation()  {
  present(CHILD_ID, S_BINARY);
}

void loop()
{
  // ...
}

void receive(const MyMessage &message) {
  // ...
}

Why MY_NODE_ID have different VALUE than I declare?