Based on the ATmega32u4 microcontroller and the Atheros AR9331, Turquoise is 100% compatible with board Arduino YUN. The Atheros processor supports a Linux distribution based on OpenWRT wireless stack named Linino. In addition to Linux commands like cURL, you can write your own shell and python scripts. Turquoise is equipped with a 10/100 Mbit/s Ethernet port, 802.11 b/g/n Wi-Fi interface (which allows connection to a wireless router or function as an A.P.), USB-A port, a micro SD slot card, 20 digital input/output pins (7 pins can be used as PWM outputs and 12 as analog inputs), a 16 MHz quartz, a micro USB connector for 5V power supply and programming, ICSP header and 3 buttons reset (one for the ATmega32u4, one for Wi-Fi and one for Linino). Power supply: 5V, dimensions (mm): 68.50x53.

N.B. Turquoise is only supported by Arduino IDE 1.5.4 and later.

The board has various status LEDs ... power, pin13, TX and RX serial, WLAN connection, WAN and USB connection.

It has 3 reset buttons: one for the ATmega32u4, one for Wi-Fi and one for Linino

• Microcontroller
  - microcontroller: ATmega32u4
  - architecture: AVR 8-bit Microchip
  - Flash memory: 32 kB (4 KB used by bootloader)
  - SRAM: 2,5 kB
  - EEPROM: 1 kB
  - Clock speed: 16 MHz
  - Operating voltage: 5 V
  - Digital I/O pins: 20 (7 can be used as PWM outputs)
  - Analog inputs: max 12 (10 bit)
  - DC current for pin I/O: 40 mA
  - DC current for pin 3,3 V: 50 mA

• Linux microprocessor
  - Processor: Atheros AR9331
  - Architettura: MIPS@400 MHz
  - Operating voltage: 3,3 V
  - Ethernet: IEEE 802.3 10/100Mbit/s
  - Wi-Fi: IEEE 802.11b/g/n
  - USB port (type A): Host/Device
  - SD card slot: only microSD
  - RAM: 64 MB DDR2
  - Flash memory: 32 MB
  - PoE compatible 802.3af

• Getting Started Guide
• Schematic.pdf
• Bridge library
• library reference page