#define myID 5

void setup() {
  // put your setvoid setup() {
  pinMode(5, INPUT); // set Tx pin as input
  pinMode(0, OUTPUT);      // set LED pin as output
  digitalWrite(0, LOW);    // switch off LED pin

  Serial.begin(9600);       // initialize UART with baud rate of 9600 bps
}

void loop() {
  if (Serial.available()) {
    char data_rcvd = Serial.read();   // read one byte from serial buffer and save to data_rcvd
    //pinMode(5, OUTPUT);
    //Serial.write(data_rcvd);

    if (data_rcvd == '5') {
      digitalWrite(0, HIGH); // switch LED On
      pinMode(5, OUTPUT);
      Serial.println("LED ON 5");
      delay(1000);
      digitalWrite(0, LOW); // switch LED On
      Serial.println("LED OFF 5");
      delay(1000);
      pinMode(5, INPUT);
    }




  }
  //  delay(1000);
  // pinMode(5, INPUT); // set Tx pin as input

}