This is a Raspberry Pi NFC HAT based on the PN532 operating in the 13.56MHz frequency range. It supports three communication interfaces: I2C, SPI, and UART.

NFC (Near Field Communication) is a wireless technology allowing contactless point-to-point data communication between devices within a short distance of 10 cm. It is widely used in applications such as access control systems, smart tickets, meal cards etc.

Based on the popular NFC controller PN532 with multi-interface options, this HAT will easily enable NFC functions for your Raspberry Pi project.

The board comes bundled with a single MIFARE Classic 1K NFC Card.

Features

• Standard Raspberry Pi 40-pin GPIO extension header
• Onboard PN532 chip, supports various NFC/RFID cards such as MIFARE/NTAG2xx etc.
• Three interface options: I2C, SPI, and UART, configured via jumpers and switches
• Breakout control pins for easily connecting with host boards like STM32/Arduino
• Comes with development resources and manual (examples for Raspberry Python/C, STM32, Arduino)

Resources

• Wiki and user guide – /wiki/PN532_NFC_HAT

Specifications

• NFC controller: PN532
• Operating voltage: 3.3V/5V
• Operating frequency: 13.56MHz
• Communication interfaces: I2C, SPI, UART (default)
• Default baud rate: 115200 bps
• Operating modes:
  • Reader/writer mode supporting ISO/IEC 14443A / MIFARE scheme
  • Reader/writer mode supporting FeliCa scheme
  • Reader/writer mode supporting ISO/IEC 14443B scheme
  • Card operation mode supporting ISO 14443A / MIFARE scheme
  • Card operation mode supporting FeliCa scheme
  • Card operation mode supporting ISO/IEC18092, ECM340 point-to-point

Suggested Applications

• Contactless payment system
• Bluetooth and WiFi devices chaining
• Social sharing function like sharing contacts, photos, and videos
• Smartphone NFC app

Note: Raspberry Pi not included