Key Features:

✔ 13.56MHz RFID/NFC Support – Works with:

• Mifare Classic (S50/S70)

• NTAG213/215/216 (NFC tags)

• ISO14443-A/B (contactless cards) ✔ SPI & I2C Interface – Flexible connectivity (Arduino, Raspberry Pi, ESP8266/ESP32). ✔ Short-Range Reading – 3–5cm (extendable with larger antenna). ✔ Onboard Antenna – Compact design for easy integration. ✔ Library Support – Works with Arduino MFRC522 library and Python (RPi).

Applications:

• Access Control – RFID door locks, security systems.

• Smart Payments – DIY NFC payment terminals.

• Data Logging – Store info on NFC tags (e.g., inventory tracking).

• IoT Device Pairing – Tap-to-authenticate for smart home devices.

Wiring (SPI Example for Arduino):

• VCC → 3.3V (⚠️ Not 5V!).

• GND → Ground.

• SDA (SS) → D10.

• SCK → D13.

• MOSI → D11.

• MISO → D12.

• RST → D9.

Technical Specifications:

• Operating Voltage: 2.5V–3.3V (5V-tolerant I/O but power at 3.3V).

• Current Consumption: ~13mA (active).

• Frequency: 13.56MHz (ISO/IEC 14443-A).

• Data Rate: Up to 848kBd.

• Dimensions: 60mm × 40mm (varies by model).

Package Includes:

• 1x MFRC522 RFID Module.

• 1x Solderable Header Pins.

• Optional: NFC tags (Mifare Classic/NTAG).

Why Choose the MFRC522?

✅ Beginner-Friendly – Simple Arduino/RPi libraries available. ✅ Low Cost – Affordable NFC solution for DIY projects. ✅ Compact – Fits into small enclosures.