The Arduino Yún is a microcontroller board based on the ATmega32u4 and the Atheros AR9331. The Atheros processor supports a Linux distribution based on OpenWrt named Linino OS. The board has built-in Ethernet and WiFi support, a USB-A port, micro-SD card slot, 20 digital input/output pins (7 of them can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and 3 reset buttons.
The power supply system provides 5V on AREF;
The layout has been modified, adding two holes for USB signals and two holes for GP6 and GPIO13(LED2).
|Product Name||Arduino Yun|
|Analog I/O Pins||12|
|Digital I/O Pins||20|
|DC Current per I/O pin||40 mA on I/O Pins; 50 mA on 3,3 Pin|
|Flash Memory||32 KB (of which 4 KB used by bootloader)|
|Clock Speed||16 MHz|
|WiFi||802.11b/g/n 2.4 GHz|
|Physical & Electrical|
|Input Voltage||5 V|
|USB (Type A)||2.0 Host|