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 ...
Hello friends! Today we will connect to the Linux side of an Arduino Yún using PuTTY on Windows. After signing in, we will inspect the filesystem, locate attached storage and create a small Python script. This gives you a practical way to work with the board's Linux environment directly. The Yún contains two processing environments. Its ATmega32U4 runs the Arduino sketch, while the Atheros AR9331 runs the Linux system. An SSH session opens a shell on Linux; it does not turn PuTTY into an Arduino sketch editor or automatically provide direct access to every microcontroller pin. This tutorial concerns the original Yún and its historical OpenWrt-Yun software. Begin with Getting Started with Arduino Yún if the network connection is not configured. We will preserve the original screenshots whil ...
