Arduino YUN (YÚN)

SKU: ADA1498 Brand: Adafruit

Retired Product

Replaced by: ABX00020

This product has been replaced by: ABX00020
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Arduino Yún 云

Arduino Yún is the first member of a new groundbreaking line of wifi products combining the power Linux with ease of use of Arduino.
Yún means “cloud” in Chinese language as the purpose of this board is to make it simple to connect to complex web services directly from Arduino.
The first Arduino Yún is the combination of a classic Arduino Leonardo (based on the Atmega32U4 processor) with a Wifi system-on-a-chip running Linino (a MIPS GNU/Linux based on OpenWRT).

Designed in collaboration with Dog Hunter, a company with extensive experience with Linux, the board adopts the linino distribution which provides signed packages to ensure the authenticity of the software installed on the device.

Adafruit embedded the Linux machine directly on the PCB of the Arduino Leonardo and Adafruit connected the two so that from Arduino it's very easy to run commands on the Linux side and use it as an Ethernet and Wifi interface.

Historically, interfacing Arduino with complex web services has been quite a challenge due to the limited memory available. Web services tend to use verbose text based formats like XML that require quite a lot or ram to parse. On the Arduino Yún Adafruit have created the Bridge library which delegates all network connections and processing of HTTP transactions to the Linux machine.
To make it even simpler to create complex applications, the Arduino Yún comes loaded with the power of Temboo, an innovative startup which provides normalized access to 100+ APIs, databases, and code utilities from a single point of contact allowing developers to mix and match data coming from multiple platforms (for example, Facebook, Foursquare, Dropbox and even FedEx and PayPal).

The board can be programmed with an USB cable in the classic Arduino way or through the Wifi connection without the need to physically access the board. The new Arduino 1.5.4 IDE has the ability to detect any Arduino Yún connected to the local network. Clicking on the name of board and inputting a password is all it's needed to program a board.

This is the first official Arduino made in Asia, in Taiwan, because dealing with a tiny embedded Linux machine and Wifi all on a small board like this requires special equipment and expertise that are easier to find there.

Arduino YÚN (3:17)

Technical Details

Microcontroller	ATmega32u4
Operating Voltage	5V
Input Voltage (recommended)	5V via microUSB or PoE 802.3af
Input Voltage (limits)	6-20V
Digital I/O Pins	14
PWM Channels	7
Analog Input Channels	6 (plus 6 multiplexed on 6 digital pins)
DC Current per I/O Pin	40 mA
DC Current for 3.3V Pin	50 mA
Flash Memory	32 KB (ATmega32u4) of which 4 KB used by bootloader
SRAM	2.5 KB (ATmega32u4)
EEPROM	1 KB (ATmega32u4)
Clock Speed	16 MHz

Embedded Linux machine

MIPS 24K processor operating at up to 400 MHz
DDR2 64MB Ram and 16MB SPI Flash
Complete IEEE 802.11bgn 1x1 AP or router
USB 2.0 host/device
poE compatible 802.3af
MicroSD card support

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