Summary
In Chapter 5, we explored the Raspberry Pi’s GPIO pins and their communication capabilities, including protocols such as I2C, SPI, UART, and PCM. We highlighted the significance of the GPIO pinout diagram when working with the Raspberry Pi and Raspberry Pi Pico.
We focused on the PIR sensor for motion detection and connected it to our Raspberry Pi. We then used this knowledge to build a basic alarm system using the PIR sensor, a pushbutton, and a buzzer. Even though we didn’t engage in a hands-on exercise with the Pico, the principles, and techniques we learned apply to both the Raspberry Pi and Raspberry Pi Pico.
This chapter commenced the construction of our IoT home security system. In the upcoming chapters, we will add to our basic alarm as we turn it into an impressive IoT home security system by creating an IoT alarm module and an IoT button to arm it.
