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Arduino YUN Rev 2

The Arduino YUN  Rev 2 has built in ethernet and Wifi Support with the familiar UNO form factor.

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Availability: SHIPS TODAY

Last Updated: 09/26/2023

Tinkersphere

TS-539

$114.99

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The Arduino Yun Rev 2 is what you're looking for if you want an Arduino board that has built in wifi and ethernet capabilities. Based on the ATmega32u4 and the Atheros AR9331 which supports OpenWrt-Yun, a Linux distribution based on OpenWrt. The YUN compared to the more popular UNO R3 has built-in Ethernet and WiFi support, micro-SD card slot, 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs) in addition to a USB port, a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a 3 reset buttons.

Specifications:

MicrocontrollerATmega32u4
Operating Voltage5V
Input Voltage5V
Digital I/O Pins20
PWM Channels7
Analog Input Channels12
DC Current per I/O Pin40 mA
DC Current for 3.3V Pin50 mA
Flash Memory32 KB (of which 4 KB used by bootloader)
SRAM2.5 KB
EEPROM1 KB
Clock Speed16 MHz
Linux microprocessor
ProcessorAtheros AR9331
ArchitectureMIPS @400MHz
Operating Voltage3.3V
EthernetIEEE 802.3 10/100Mbit/s
WiFiIEEE 802.11b/g/n
USB Type-A2.0 Host
Card ReaderMicro-SD
RAM64 MB DDR2
Flash Memory16 MB
PoE compatible 802.3af card support (see the note below) 
Length73 mm
Width53 mm
Weight32 g
  • LininoOS
    • Software stack updated to OpenWRT latest version, including all patches
    • SSL support on the bridge Arduino / Linux bridge
  • 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
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