Wi-Fi hacking has become cheaper and easier with the creation of the Wi-Fi deauther, an Arduino based firmware for the ESP8266 that allows it to perform advanced Wi-Fi attacks for as little as a few dollars on any operating system. This workshop is for beginners interested in hacking with microcontrollers, hackers interested in learning Wi-Fi hacking, and anyone interested in what's possible with low-cost devices.

https://wiki.hope.net/index.php?title=Wi-Fi_Hacking_on_the_ESP8266_Workshop