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Table of Contents
RFID RC522
This is a very inexpensive RFID module with an MFRC522 integrated circuit and a PCB antenna.
Pinout
+-------------------------------------+ | ANTENNA | | | | XTAL NXPRC522 | | | + *SDA SCK MOSI MISO IRQ GND RST 3V3 + *Although labelled I2C SDA, the function is SPI NSS. I2C mode is not enabled on the module.
