
Android ADK Compatiblity! Tested with a Google Nexus S and an LG Optimus One (P500). Will work with any ADK-compatible Android phone with Android 2.3 or higher and the appropriate ADK libraries installed. NO SECONDARY SHIELD NECESSARY!

Completely
Open Hardware Design. Schematic/layout/BillOfMaterials/assembly instructions
available for Open Source
KiCAD

RESET and HWB
buttons for bootloader activation - no external programmer required!
USB or externally powered through the DC Jack (2.1mm ID, 5.5V to 15V input)
microSD connector in SPI Mode

5V rail capable of up to
1A and 3.3V rail capable of
up to 500mA

Atmel
AT90USB1287 USB AVR Microcontroller
USB 2.0 Full Speed (12Mbit/s)

USB Device and Host mode

USB-B connector for power sourcing, device development, and firmware upload

USB-A connector for USB Hosting
120kb of available
FLASH memory for your programs (8kb used by USB bootloader - stock Atmel or
LUFA)

On-chip
8192 bytes of
SRAM and
4096 bytes of
EEPROM

up to 128kbytes of available
External SRAM

16MHz Crystal

25 available General Purpose IO (GPIO) Pins

I/O pins accessible through an
Opennect compatible
Opennect-Controller_MCU_5V-PWR_5W connector and/or
Arduino compatible headers and/or
STK500 compatible 0.1"x0.1" 5x2 DIL Headers

PortB is bidirectionally voltage translated to 3.3V through a
TXB0108 IC
JTAG header for debugging or bootloader update

RoHS-compliant