Blynk Library is a C++ library that connects embedded hardware boards to the Blynk IoT cloud platform.
The library solves the problem of building connected IoT applications by providing a unified interface for diverse hardware to communicate with Blynk Cloud. It supports over 400 hardware models including Arduino boards, ESP8266, ESP32, Raspberry Pi, and Particle devices. Hardware can connect via native connectivity or through shields providing Ethernet, WiFi, GSM, or LTE. Once connected, users can build mobile interfaces for iOS and Android using a drag-and-drop visual editor without writing mobile code, while the library handles the cloud communication protocol on the device side.
The library suits developers building IoT projects who want to avoid writing custom mobile applications and cloud infrastructure. It works well for both DIY projects and commercial deployments. The Blynk Cloud service is available free to all users. The library provides examples for different hardware and connectivity combinations, allowing developers to mix and match their board type with their available transport mechanism.
The project maintains active community engagement through a forum with a large user base and provides an examples browser for exploring capabilities. Contributions are accepted for stability improvements, new hardware support, and other enhancements. The codebase is released under the MIT License, making it suitable for both open and closed source projects.
