IRremoteESP8266 is an Arduino library that enables sending and receiving infrared signals on ESP8266 and ESP32 microcontrollers using common 940nm IR LEDs and receiver modules.
The library solves the problem of controlling and decoding infrared devices from microcontroller boards. It works by providing APIs to transmit IR signals to devices like air conditioners and other appliances, and to receive and decode signals from IR remotes. The tool supports multiple infrared protocols, allowing it to work with a wide range of commercial IR devices.
Developers should choose this library if they are building home automation or HVAC control projects on ESP8266 or ESP32 platforms and need bidirectional IR communication. It integrates with the Arduino IDE and PlatformIO, making it accessible to developers already working in those environments. The library is suitable for projects requiring control of air conditioners, fans, and other IR-controlled appliances. A troubleshooting guide and FAQ are available to help with common issues during integration.
The project maintains active engagement with its user base through documented upgrade paths for major versions, including detailed migration guides when the API changes significantly. The maintainers have invested in comprehensive documentation including Doxygen-generated API reference and a supported protocols list. The codebase has undergone modernization efforts, such as transitioning from preprocessor constants to C++ const declarations following Google's style guide, with backward compatibility aliases provided during the transition period.
