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Arduino Yun

The Arduino Yun allows for remote data transfer via any TCP/IP network including the remote uploading of sketches ! The Yun integrates Arduino sketches with the power of Linux via its on board, OpenWRT based Linux distribution to bring the power of cloud APIs to your Arduino sketch. Now you can integrate to web services such as drop box or twitter or provide a service for remote query.

Arduino Yun R1,250
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The Ardunio Yun has onboard wifi and power-over-Ethernet connection you can send sensor data and received instructions via the internet. The device is configured by a on-board web interface which allows for the uploading of sketches and configuration of the wifi and Ethernet settings to connect to the correct network. 

The board two controllers the, Atheros AR9331 and the ATmega32u4 microelectronic allow for Arduino sketches to issue commands to the Linux based distribution for connecting to web services and servers and processing of api calls. You are no longer constrained by the Arduino constrained memory environment.

Besides the built-in Ethernet and WiFi support, the Yun has 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 analogue inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a 3 reset buttons.

Arduino Yun Micro controller Specs
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 (4 KB for bootloader)
SRAM 2.5 KB
EEPROM 1 KB
Clock Speed 16 MHz

 

Arduino Yun - Linux Microprocessor Spec
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
Card Reader Micro-SD only
RAM 64 MB DDR2
Flash Memory 16 MB
PoE compatible 802.3af card support