Exploring the GPIO
Throughout the first four chapters of the book, we have touched on the General-Purpose Input/Output (GPIO) port on the Raspberry Pi. In Chapter 3, we used it extensively in the construction of our weather indicator. In this chapter, we will dive deeper into the functionality and applications of the GPIO port on the Raspberry Pi as we start to build our IoT home security application. We will also explore the GPIO port on the Raspbery Pi Pico, the microcontroller cousin of the Raspberry Pi.
In the hands-on tutorial section, we will construct a basic alarm system using a PIR motion sensor to detect human presence. This system will integrate a pushbutton for activation control and a buzzer as an alert mechanism. Through this practical exercise, we will demonstrate how the Raspberry Pi can interface with various components to create functional real-world applications.
In this chapter, we will cover the following:
- Introducing the GPIO on the Raspberry Pi...
