Difference between revisions of "Arduino YUN"

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Revision as of 12:04, 17 June 2014

Description

The Arduino Yún is a microcontroller board based on the ATmega32u4 (datasheet) and the Atheros AR9331. The Atheros processor supports a Linux distribution based on OpenWrt named OpenWrt-Yun. The board has built-in Ethernet and WiFi support, a USB-A port, micro-SD card slot, 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a 3 reset buttons.

IMG 1967.jpg IMG 1971.jpg

The Yún distinguishes itself from other Arduino boards in that it can communicate with the Linux distribution onboard, offering a powerful networked computer with the ease of Arduino. In addition to Linux commands like cURL, you can write your own shell and python scripts for robust interactions.

YUN 4.png

The Yún is similar to the Leonardo in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Yún to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port.

YUN 5.png

NB : In some countries, it is prohibited to sell WiFi enabled devices without government approval. While waiting for proper certification, some local distributors are disabling WiFi functionality. Check with your dealer before purchasing a Yún if you believe you may live in such a country.

Summary

Because the Yún has two processors, the summary section shows the characteristics of each one in two separate tables.

AVR Arduino microcontroller

Microcontroller ATmega32u4
Operating Voltage 5V
Input Voltage 5V
Digital I/O Pins 20
PWM Channels 7
Analog Input Channels 12
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin                50 mA
Flash Memory 32 KB (of which 4 KB used by bootloader)        
SRAM 2.5 KB
EEPROM 1 KB
Clock Speed 16 MHz

Linux microprocessor

Processor Atheros AR9331
Architecture MIPS @400MHz
Operating Voltage                        3.3V
Ethernet IEEE 802.3 10/100Mbit/s                                 
WiFi IEEE 802.11b/g/n
USB Type-A 2.0 Host/Device
Card Reader Micro-SD only
RAM 64 MB DDR2
Flash Memory 16 MB

PoE compatible 802.3af card support (see the note below)

Schematic

Schematic:File:Arduino-Yun-schematic.pdf

How to buy

Click here to buy Arduino Yun