RFID Toy

#include <MFRC522.h>
#include <SPI.h>
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"

#define RST_PIN         9          // Configurable, see typical pin layout above
#define SS_PIN          10         // Configurable, see typical pin layout above

// Instance of the class
MFRC522 rfid(SS_PIN, RST_PIN);

SoftwareSerial mySoftwareSerial(5, 6); // RX, TX
DFRobotDFPlayerMini myDFPlayer;

// Init array that will store new NUID
byte nuidPICC[4];

void setup() {

  //mySoftwareSerial.begin(9600);
  Serial.begin(9600);
  SPI.begin(); // Init SPI bus
  rfid.PCD_Init(); // Init MFRC522

  if (!myDFPlayer.begin(mySoftwareSerial)) {  //Use softwareSerial to communicate with mp3.
    Serial.println("Issue starting DFplayer");
  } else {
    Serial.println("DFPlayer Mini online.");
  }

  myDFPlayer.volume(30);  //Set volume value. From 0 to 30

}

void loop() {

  if (!rfid.PICC_IsNewCardPresent()) { return; } // Look for new cards
  if (!rfid.PICC_ReadCardSerial()) { return; } // Verify if the NUID has been readed

  if (rfid.uid.uidByte[0] != nuidPICC[0] || rfid.uid.uidByte[1] != nuidPICC[1] || rfid.uid.uidByte[2] != nuidPICC[2] || rfid.uid.uidByte[3] != nuidPICC[3] ) {

    String tag = String(rfid.uid.uidByte[0]) + String(rfid.uid.uidByte[1]) + String(rfid.uid.uidByte[2]) + String(rfid.uid.uidByte[3]);
    Serial.println(tag);

    if(tag == "1421286112") {
      Serial.println("Play sound 1");
      myDFPlayer.play(1);
    }

    if(tag == "1269073112") {
      Serial.println("Play sound 2");
      myDFPlayer.play(2);
    }

    if(tag == "17423272112") {
      Serial.println("Play sound 3");
    }

  }

  // Halt PICC
  rfid.PICC_HaltA();

  // Stop encryption on PCD
  rfid.PCD_StopCrypto1();

}