#include <SoftwareSerial.h>
SoftwareSerial mySerial(0, 1); // RX, TX (Nano pin numbers)

const char node = '1'; // network address
const int ledPin = 13; // the number of the LED pin, which is 13 for UNO board
int incomingByte;

void setup() {
  mySerial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(1, INPUT);
}

void loop() {
  if (mySerial.available() > 0) {
    //digitalWrite(ledPin, HIGH);
    //delay(200);
    //digitalWrite(ledPin, LOW);
    //delay(200);
    incomingByte = mySerial.read();
    if (incomingByte == node) {
      digitalWrite(ledPin, HIGH);
      pinMode(1, OUTPUT); // open line to write
      mySerial.print("node ");
      mySerial.println(node);
      pinMode(1, INPUT);
      delay(1000);
      digitalWrite(ledPin, LOW);
    }
  }
}