Use MQTT and ESP8266 module to control Mitsubishi HVAC unit. It use SwiCago librairies: https://github.com/SwiCago/HeatPump
Features: Initial config with WIFI AP mode and portal Control unit with webinterface Configuration MQTT Control with MQTT Homeassistant autodiscovery with MQTT
Screenshots:
Main Page
Control page
Config page
How to use: Flash the sketch with flash size include SPIFFS option. After flash, connect to device AP with name HVAC_XXXX (XXXX last 4 character MAC address), enter 192.168.1.1 and set Wifi information, save & reboot Set MQTT information for use with Home Assistant (Optinal), find the device IP with last 4 character MAC address in your router