You hear a lot about app, kernel, and ROM development in the Android development community, and XDA is no exception. However, that's not all you can do. We've discussed it before, but you can do hardware modifications and development with Android and Google's Accessory Development Kit (ADK).

In this episode, XDA Elite Recognized Developer AdamOutler shows off how to make a "keyboard" for your Android device. Using an Arduino-like board, a USB cable, and some code, he creates a button that when pressed will type whatever message you have programmed for the button. So if you wanted to know more about hardware hacking, Arduino development, or just want to see what cool project AdamOutler is working on, check out this video.

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