WiFi Linux OS Ethernet 5V Standard (~20) No battery

The Yún Rev 2, Linux powered board with the Arduino simplicity, is the perfect board for your IoT projects!

  • Overview
  • Tech Specs
  • Documentation
  • The Yún rev. 2 with the power of a Linux based system that enables advanced network connections and applications.
    Connection to your WiFi or wired network is simple thanks to the Yún Web Panel and the dedicated ''YunFirstConfig'' sketch. The Web panel allows you to manage your shield preferences and upload your sketch. The Yún rev. 2 uses the Bridge library and so extends the board capabilities by using the Linux processor.

    As always, every element of the platform – hardware, software and documentation – is freely available and open-source. This means that you can learn exactly how it's made and use its design as the starting point for your own projects.

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  • AVR Arduino microcontroller

    Microcontroller ATmega32U4
    Operating Voltage 5V
    Input Voltage 5V
    Digital I/O Pins 20
    PWM Output 7
    Analog I/O Pins 12
    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)
    SRAM 2.5 KB
    Clock Speed 16 MHz

    Linux Microprocessor

    Processor Atheros AR9331
    Architecture MIPS
    Operating Voltage 3.3V
    Ethernet 802.3 10/100Mbit/s
    WiFi 802.11b/g/n 2.4 GHz
    USB Type 2.0 Host
    Card Reader Micro-SD
    RAM 64 MB DDR2
    Flash Memory 16 MB
    Clock Speed 400 MHz

  • OSH: Schematics

    The Yún Rev. 2 is open-source hardware! You can build your own board using the following files:


    Pinout Diagram

    Download the full pinout diagram as PDF here.

    Interactive Board Viewer


    The Yún Rev. 2 board allows you to connect to the internet using the onboard WiFi or Ethernet connection. Furthermore thanks to the Bridge library it able to extend the functionalities of the Microprocessor by using the computational power of the Linux processor on the shield. Using the Yún Web Panel it is also possible to configure all the shield-related features and remotely upload sketches on the board connected to the shield. 

    On-board Indicators

    The shield contains a number of signalling LEDs:

    • ON (green): indicates that the shield is properly powered
    • WLAN (blue): indicates a connection to a wireless network
    • WAN (red): indicates connection to ethernet
    • USB (white) : indicates system activity and/or if a USB key is mounted

    Download the full pinout diagram as PDF here 

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