USBNFCBluetooth

USBNFCBluetooth is a compact, open hardware and software platform that combines USB connectivity, Near Field Communication (NFC) capabilities, and Bluetooth communication in a single device. It is designed to enable developers to prototype and deploy systems that interact with NFC tags or cards via USB or wireless Bluetooth connections. The platform is intended for embedded developers, hobbyists, and researchers to experiment with contactless interactions without requiring multiple separate hardware components.

Hardware architecture consists of three primary subsystems: a USB controller supporting host or device mode, an NFC controller compatible with common standards (ISO/IEC 14443, NFC Forum Type 2/4), and a Bluetooth radio (BLE or classic) with a suitable MCU. The firmware abstracts NFC operations and exposes them over USB as serial or HID interfaces and over Bluetooth via GATT services or a serial profile, enabling applications to read tag IDs, data blocks, or to emulate simple NFC tags.

Key features include plug-and-play USB interface, support for common NFC protocols, tag emulation, and Bluetooth connectivity for mobile apps. The project emphasizes open-source design, offering reference schematics, PCB layouts, firmware, and software libraries.

Typical use cases include prototyping access-control demos, NFC-tag data transfer to smartphones, inventory labeling, and educational lab experiments on contactless technologies.

Development and status: The USBNFCBluetooth project is maintained by an open community with documentation and test firmware available. It is released under open-source licenses, with ongoing work to improve compatibility, power management, and security.