A Node.js implementation of the Web Bluetooth API for connecting to Bluetooth Low Energy devices.
Node Web Bluetooth is a Node.js library that implements the Web Bluetooth Specification, allowing JavaScript applications running on Node.js to discover, connect to, and communicate with Bluetooth Low Energy devices. It solves the problem of accessing BLE hardware from server-side or desktop Node.js applications, which traditionally lacked a standardized Bluetooth API.
Node.js developers building applications that need to interact with Bluetooth Low Energy devices, such as IoT projects, hardware prototyping tools, or desktop utilities that communicate with BLE peripherals.
Developers choose Node Web Bluetooth because it provides a standards-compliant, familiar API (the Web Bluetooth API) for Node.js, eliminating the need to learn platform-specific Bluetooth libraries. It offers cross-platform support and simplifies BLE device integration in JavaScript environments.
Node.js implementation of the Web Bluetooth Specification
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Implements the Web Bluetooth Specification, allowing developers familiar with browser APIs to seamlessly port code to Node.js, as evidenced by the identical requestDevice() and GATT methods.
Provides prebuilt binaries for Windows, macOS, and Linux on x64 and arm64 architectures, simplifying installation without manual compilation for supported platforms.
Supports filtering by services, names, and manufacturer data, plus a deviceFound hook for custom selection logic, enabling precise control over BLE device interactions.
Enables reading/writing characteristics, subscribing to notifications, and full service discovery, covering most BLE communication needs as shown in the implementation status.
Depends on SimpleBLE with multiple licenses (MIT to BUSL-1.1), requiring careful version selection and adding legal overhead for commercial use, as detailed in the README's licensing section.
Missing key Web Bluetooth features like watchAdvertisements, exclusionFilters, and several events, limiting functionality for advanced BLE scenarios.
Development requires cmake and platform-specific tools (e.g., Visual Studio on Windows), creating a barrier for JavaScript-focused developers without C++ experience.