In this tutorial we will learn How to interface Arduino UNO with RC522 RF ID Reader using Arduino library for MFRC522 and other RFID RC522 based modules.
This library read and write different types of Radio-Frequency IDentification (RFID) cards on your Arduino or NodeMCU using a RC522 based reader connected via the Serial Peripheral Interface (SPI) interface. Before we move to actual code lets know more about RF ID.
