Arduino project that uses an MFRC522 RFID reader over SPI to detect RFID cards or tags and print their UID to the Serial Monitor. It also checks the RC522 module version to confirm communication with ...

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

This project writes custom data to a MIFARE Classic RFID card using an MFRC522 RC522 RFID reader and an Arduino-compatible board. The program authenticates a selected memory block using the default ...