Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/

OTGateway is a powerful open-source solution for controlling OpenTherm-compatible boilers, turning your heating system into a smart one. Set the perfect temperature, save on energy bills, and eliminate unnecessary hassle — integration with Home Assistant makes heating management simple and automated.

ESPHome component for AUX based air conditioners. Direct wifi control of HVAC by ESPHome and Home Assistant. HVAC status and command feedback are available.

Open source heat pump controller and home automation terminal, built on ESP32

OpenTherm library to create thermostat for OpenTherm enabled boilers and HVACs using an OpenTherm controller and an ESP32 or other microcontroller

CQC (Charmed Quark Controller) a commercial grade, full featured, software based automation system. CQC is built on our CIDLib C++ development system, which is also available here on GitHub.

Home Climate Control ESP32 based edge device firmware

Simple opentherm thermostat domoticz integation sample

Arduino Modular OpenTherm Regulator

VSC /Pio converted from MHI-AC-CTRL Reads and writes data (e.g. power, mode, fan status etc.) from/to a Mitsubishi Heavy Industries (MHI) air conditioner (AC) via SPI controlled by MQTT