How to use ESP8266 ESP-01 as a SENSOR web client

by marc2203 @ importhack.wordpress.com: I’m not going to explain in detail what is ESP8266 because if you have found this post I’m sure you already know it. But just in case, it is an awesome cheap board (less than 4$) with built-in wifi communication (802.11 b/g/n), and SPI, UART. You can...