O'Reilly logo

Making Android Accessories with IOIO by Simon Monk

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 5. Surveillance Rover

The last project of this book is to create a small IOIO-powered rover. This is another project that uses a Bluetooth to give wireless control of the rover (Figure 5-1 and Figure 5-2).

Surveillance rover
Figure 5-1. Surveillance rover
Surveillance rover control software
Figure 5-2. Surveillance rover control software

The rover also optionally provides a platform for a wireless web cam or a second Android phone with wireless web cam software on it, as shown in Figure 5-1. The author used an app called IP Camera from the Android Market, which converts the phone into a web cam that acts as a server over WiFi. You can then go to a URL in your browser and see the image from the web cam.

The Design

The outputs of an IOIO board are not powerful enough to drive electric motors, so a motor control breakout board is used. This little board (Figure 5-3) allows bi-directional control of the motors. That is, you can control both the speed and direction of two separate motors.

SparkFun motor controller
Figure 5-3. SparkFun motor controller

Figure 5-4 shows the schematic diagram for the project. This time, for obvious reasons, we will use batteries rather than a power adaptor.

The IOIO pins for the motor control are selected so that we can use header pins to ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required