L'ESP8266 a été créé en 2014 par une société chinoise (Espressif). Elle a été surtout utilisée au début pour ajouter des fonctionnalités WIFI à des projets Arduino via des commandes AT.

Serial Communication with Arduino and ESP8266 This project demonstrates how to establish serial communication between an Arduino board and the ESP8266 Wi-Fi module for sending and receiving data.

This firmware allows you to easily perform a variety of actions to test 802.11 networks using an ESP8266. It's also a great project for learning about WiFi, microcontrollers, Arduino, hacking and ...

He’s provided a wiring diagram in the repository along with the Arduino code for the ESP8266, but the hardware side of this demonstration really isn’t that important.

As usual I’ll be using a NodeMCU board (I really did order a lot of them) which uses an ESP8266, but there’s no reason this would be difficult to achieve on an Arduino-based device.