It's works for me:


#include <SPI.h>
#include <MFRC522.h>


#define MISO_PIN 12
#define MOSI_PIN 13
#define SCK_PIN 14
#define SS_PIN 15
#define RST_PIN 16


MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance

void setup() {
delay(2000);
Serial.begin(115200); // Initialize serial ...