Yún WiFi Status

This sketch runs a script called "pretty-wifi-info.lua" installed on your Yún in the folder /usr/bin. It prints information about the status of your WiFi connection.

It uses Serial to print, so you need to connect your Yún to your computer using a USB cable and select the appropriate port from the Port menu before it will run.

Hardware Required

  • Arduino Yún
  • wireless network


There is no circuit for this example.

image developed using Fritzing. For more circuit examples, see the Fritzing project page


You'll first need to include the Process class :
#include <Process.h>

In setup(), start serial communication, and the Bridge. The sketch won't run until a serial connection is made.

void setup() {

  Serial.println("Starting bridge...\n");
  digitalWrite(13, LOW);  
  digitalWrite(13, HIGH);  // Led on pin 13 turns on when the bridge is ready


In loop(), initialize a new process that will run the WiFi check script. you can run the script by calling runShellCommand() with the path to the script.

void loop() {
  Process wifiCheck;

Print out any characters returned by the script to the serial monitor, and wair for a few seconds before running again.

while (wifiCheck.available() > 0) {
    char c = wifiCheck.read();



The complete code is below :

SORRY, There is an error at our code repository, please inform to web@arduino.cc

See Also

  • Bridge Library - Your reference to the Bridge Library
  • Bridge – Simple REST style calls to access analog and digital pins
  • Consolle Ascii Table – A complete ASCII table printed to the Console
  • Console Pixel – Turn an LED on and off through the Console
  • Console Read - Read data coming from bridge using the Console.read() function
  • Data Logger - Log data from three analog sensors to an SD card.
  • File Write - How to write file into the Yún filesystem.
  • Http Client - A basic HTTP client that connects to the internet and downloads content.
  • Mailbox Read Message - How to read the messages queue, called Mailbox, using the Bridge library.
  • Process - How to run linux processes using an Arduino Yún.
  • Shell Commands - How to run linux shell commands using an Arduino Yún.
  • Temperature Web Panel - How to serve data from an analog input via the Arduino Yún's built-in webserver.
  • Time check - Gets the time from Linux via Bridge then parses out hours, minutes and seconds.
  • Serial Terminal - Use the Yún's 32U4 processor as a serial terminal for the Linux side on the Yún.

Last revision 2015/08/12 by SM