Android Open Accessory kit contains a DFRduino Mega ADK controller and an Accessory Demo Shield.

 We produced the Android Open Accessory kit with a full-featured, low price, fully compatible with the official version.
Android Open Accessory kit contains a DFRduino Mega ADK controller and an Accessory Demo Shield.
DFRduino Mega ADK Arduino-based controller is that a controller for Android devices, it's extremely compact size, compatible with Arduino MEGA ADK and Google ADK.
Accessory Demo Shield at the same time equipped with a 2-way relay, a temperature sensor, a linear light sensor, a touch sensor, a digital joystick IIC, three RGB three-color lights, three buttons, etc., with the Mega ADK can use Google's ADK to develop, can run on Android 2.3.4 or Android 3.1 devices on the system interaction.
Technical Specifications
DFRduino Mega ADK
Controller: ATmega2560
Operating voltage: 5V
Input Voltage :7-12V
Threshold voltage :6-15V
Digital interface: 54 (including 14 PWM output)
Analog ports: 16
IO port output current: 40 mA
3.3V power supply output current: 100 mA
Flash: 256 KB of which 8 KB used by bootloader
SRAM: 8 KB
EEPROM: 4 KB
Crystal: 16 MHz
Accessory Demo Shield
 2 relay
3-way steering control
An external power supply terminals Servos
An LM35 temperature sensor
A linear light sensor lx1972
A touch sensor
1 IIC digital rocker
3 three-color RGB lamps
Three buttons
Distribution list
DFR0156 DFRduino Mega ADK controller 1
DFR0166 Accessory Demo Shield For Arduino Mega 1