In this chapter, you understood the electronics fundamentals that are really going to help you go ahead with a bit more complex projects. It was not all about electronics, but about all the essential concepts that are needed to build the projects that we will go through in the next chapters. After covering the concepts of electronics, we took a dive into the communication protocols; it was interesting to know how the electronic devices work together. You learned that just as humans talk to each other in a common language, they also talk to each other using a common protocol.

After covering pin assignments on the RasPi expansion connector, we made an LED blink by programming a GPIO port in the shell, Python, and C languages, which can be useful for showing any kind of indication and decisions made by the RasPi while using the sensors. It was exciting to learn electronics, the communication protocols, and the blinking of the LEDs in your own way. You are now ready with almost all of...