Overview This is a Raspberry Pi NFC HAT based on 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 allows 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 system, smart tickets, meal card, etc. Based on the popular NFC controller PN532 with multi interface options, this HAT will easily enable NFC function for your Raspberry Pi. Features Onboard standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards Reserving breakout control pins, for easily connecting with host boards like STM32/Arduino Onboard PN532 chip, supports various NFC/RFID cards like MIFARE/NTAG2xx, etc. Three interface options: I2C, SPI, and UART, configured via jumpers and switches Comes with development resources and manual (examples for Raspberry Python/C, STM32, Arduino): //bit.ly/3tlyyEb Specifications NFC controller: PN532 Operating voltage: 3.3V/5V Operating frequency: 13.56MHz Communication interfaces: I2C, SPI, UART (default) Default baudrate: 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 Applications Contactless payment system Bluetooth and WiFi devices chaining Social sharing function like sharing contacts, photos, and videos Smart phone NFC app Package Content PN532 NFC HAT x1 MIFARE Classic 1K Card x1Onboard PN532 chip, supports various NFC/RFID cards like MIFARE/NTAG2xx, etc. Based on the popular NFC controller PN532 with multi-interface options, this HAT will easily enable NFC function for your Raspberry Pi. Reserving breakout control pins, for easily connecting with host boards like STM32/ and forArduino. Onboard standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards. It supports three communication interfaces: I2C, SPI, and UART, configured via jumpers and switches. This is a Raspberry Pi NFC HAT based on PN532 operating in the 13.56MHz frequency range. NFC (Near Field Communication) is a wireless technology that allows 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.