Hello friends! In this tutorial, we will configure an Arduino Yún to connect to a known Wi-Fi network and understand how it should recover when that network temporarily disappears. We will separate one-time configuration from ordinary connection monitoring so that the board does not repeatedly restart its own network. The original Yún combines an ATmega32U4 with an Atheros AR9331 running a Linux-based system. The Linux side manages Wi-Fi, while an Arduino sketch can communicate with it through the Bridge library. That arrangement is different from an ordinary sketch controlling a Wi-Fi shield directly. We will first save the intended network profile, then inspect connection status from the Arduino side. Along the way, we will correct several misunderstandings in the earlier example, includ ...