Arduino Yun-Guide

Guide de démarrage Arduino Yun

The Arduino Yún is an Arduino board unlike any other. While programming it is very similar to the Arduino Leonardo (Anglais, Arduino.cc) and uses the same processor, the Atmel ATmega32U4, it also has an additional processor, an Atheros AR9331, running Linux and the OpenWrt wireless stack. Programming the 32U4 via USB is identical to the Arduino Leonardo. Once you've configured the Yún to connect to your WiFi network, you can program the 32U4 via WiFi as well.

To connect the Arduino Yún to your computer, you'll need a Micro-B USB cable. This USB cable provides power and data to the board. When programming the Yún, you must choose Arduino Yún from the Tools > Board menu in the Arduino IDE. The Yún is only supported by Arduino IDE 1.5.4 and later.

Différences avec un Arduino Leonardo

• • Img 1***

In addition to the 32U4 chip, the Yún has an additional processor, an Atheros AR9331, which runs a distribution of Linux for embedded systems named Linino, based on OpenWrt. A full install of Python 2.7 is included as well.

The Yún has a number of different physical characteristics and connectors than the Leonardo. There is an on-board SD slot, Ethernet jack, and a USB-A Host connector. There is no power barrel connector on the Yún; it can be powered from the micro-USB connector.

There is no built in 5V regulator. If you power your Yún with more than 5V, you will likely damage it. If you are not powering the Yún from the micro-USB connection, you can apply power to the Vin and 5V pins on the board. It is recommended to power the Yún from the USB connection whenever possible.

The SD, Ethernet, and USB-A connectors are not physically connected to the 32U4 processor, they are connected to the AR9331.

The Yún's 32U4 functions in the same way as the Leonardo, except you cannot use Serial1. It is reserved for communication with the AR9331 processor.

The Yún also has a WiFi module built on board, allowing it to connect to a wireless router, or act as an access point.

The 32u4, WiFi, and AR9331 processors all have their own reset buttons.

• • Img 2***

There are several status LEDs on the Yún, indicating power, WLAN connection, WAN connection and USB. Additionally pin 13 is connected to one of the status lights.

• • Img 3***

Guide en vidéo

Voici une vidéo YouTube "Getting started with Yun" réalisée par Arduino.

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Source: Arduino Yun, Guide to the Arduino Yún. Crédit: Arduino.cc, licence Creative Common Attribution ShareAlike.

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