The Teemino board is based on an Arduino Mega 2560
Teemino is an Android ADK compatible board based on Arduino Mega/2560 with USB host. This board is based on Google's reference design of Android USB accessory. Using this board and the NXShield-M, you'll be able to connect your Android device and your Lego Mindstorms NXT robot
The board has all the features of an Arduino Mega2560 and also the USB host extensions as defined by Google's Android ADK design.