You may have read one of my last postings: Building a basic webinterface for your ESP8266 . If you have had a look into the code you will have noticed that you can adjust the measuring unit in the configuration. But what if you have a guest who comes from the United States of America and you have configured to display Celsius? We will spend some time on this scenario and I will show you how you can solve this problem.
One of the great advantages of the ESP8266 is it's Wi-Fi-interface and the very fast processor. (It also has a, compared to other microcontrollers, large data-storage.)
So it is easier than ever to generate a nice UI (user interface) to control your project. (You do not even need an additional element.) In this post I will show you how you can introduce a HTML5-based graphical user interface.