MeteoHome. Yet another NodeMCU ESP8266 weather station | Combatiendo al byte rebelde
This is my first IoT project using ESP8266. It is just another weather station but you can configure it through web and uses mqtt to send the data collected by the sensors. You can find a configuration file for Home Assistant to display current values and historical graphs.
http://www.deuteros.es/blog/123-meteohome-yet-another-nodemcu-esp8266-weather-station