We have used an 8 x 8 LED dot matrix display module on Raspberry Pi. The module uses IC MAX7219 as the driver to control the display of LEDs. We also built some programs to get more practices to use the 8 x 8 LED dot matrix display module.

In the next chapter, you will learn to build a light traffic controller by using Raspberry Pi. We will start with designing a light traffic controller and then implementing it.