Create your own electronic devices with the popular IOIO ("yoyo") board, and control them with your Android phone or tablet. With this concise guide, you€ll get started by building four example projects€"after that, the possibilities for making your own fun and creative accessories with Android and IOIO are endless.

To build Android/IOIO devices, you write the program on your computer, transfer it to your Android, and then communicate with the IOIO via a USB or Bluetooth connection. The IOIO board translates the program into action. This book provides the source code and step-by-step instructions you need to build the example projects. All you have to supply is the hardware.

• Learn your way around the IOIO and discover how it interacts with your Android
• Build an intruder alarm that sends a text message when it detects movement
• Make a temperature sensing device that logs readings on your Android
• Create a multicolor LED matrix that displays a Space Invader animation
• Build an IOIO-powered surveillance rover that you control with your Android
• Get the software and hardware requirements for creating your own Android/IOIO accessories