inroduction to mfrc522, Mfrc522 pinout, mfrc522 circuit, mfrc522 Hello friends, I hope you all are fine and will be doing great. In today's tutorial, we are gonna have a look at detailed Introduction to MFRC522. MFRC522 is basically a highly integrated read and write card chip applied to the 13.56 MHz contactless communication. It is a less costly, low voltage, ...