Chapter 9. Even More Useful Sensors
Your projects may want to do more than just avoiding barriers. In this chapter, we'll go through the following topics:
How to add a digital compass so that your projects can sense direction.
How to add an accelerometer/gyro to your project so that you can sense the tilt and movement of your projects.
How to add an altimeter/pressure sensor to your project so that you can sense your altitude. These can also be useful in weather prediction.