Project 32 · Sensor Catalog (Vol III)

RC522 RFID Reader

Unlock the world of wireless identification by building your own RFID-based security scanner.

Capstone 110 min 4 components
RC522 RFID Reader wiring diagram

What you'll learn

  • Understand and implement the SPI (Serial Peripheral Interface) protocol.
  • Identify the difference between 3.3V and 5V logic levels in sensor modules.
  • Read and interpret Hexadecimal Unique Identifiers (UIDs) from RFID tags.
  • Integrate third-party libraries to handle complex radio frequency communication.

What's in the kit

  • Arduino Nano / Uno
  • RC522 RFID Module (incl. Tag & Card)
  • Breadboard
  • Jumper Wires (M/F and M/M)×10

Protocol: SPI