https://tttapa.github.io/ESP8266/Chap10%20-%20Simple%20Web%20Server.html https://www.geekstips.com/two-esp8266-communication-talk-each-other/
This page contains a summary of what I have learned whilst trying to build a web-hosted temperature/humidity sensor module using the ESP8266 WiFi microcontroller. At the end of the project, you will end up with a WiFi-controllable Temperature & Humidity sensor, updatable over WiFi, with a webserver hosting your data on your local network using ChartJS. This is all wrapped up in a 3D printed housing model to it to finish it all up.