In the previous chapter, we discussed object detection and tracking and also learned to detect motion in scenes. Along the way, we also learned various concepts of image processing that may also be used for different applications.
In this chapter, we will be moving forward from the software-based approach of the previous chapter and explore the hardware capabilities of the Raspberry Pi. We will also learn about an add-on called the GrovePi Shield, which will extend the GPIO capabilities of the Pi platform and make it even easier to connect new sensors to it. In this chapter, we will learn about the following: