Book Image

Raspberry Pi Zero W Wireless Projects

By : Vasilis Tzivaras
1 (1)
Book Image

Raspberry Pi Zero W Wireless Projects

1 (1)
By: Vasilis Tzivaras

Overview of this book

The Raspberry Pi has always been the go–to, lightweight ARM-based computer. The recent launch of the Pi Zero W has not disappointed its audience with its $10 release. "W" here stands for Wireless, denoting that the Raspberry Pi is solely focused on the recent trends for wireless tools and the relevant use cases. This is where our book—Raspberry Pi Zero W Wireless Projects—comes into its own. Each chapter will help you design and build a few DIY projects using the Raspberry Pi Zero W board. First, you will learn how to create a wireless decentralized chat service (client-client) using the Raspberry Pi's features?. Then you will make a simple two-wheel mobile robot and control it via your Android device over your local Wi-Fi network. Further, you will use the board to design a home bot that can be connected to plenty of devices in your home. The next two projects build a simple web streaming security layer using a web camera and portable speakers that will adjust the playlist according to your mood. You will also build a home server to host files and websites using the board. Towards the end, you will create free Alexa voice recognition software and an FPV Pi Camera, which can be used to monitor a system, watch a movie, spy on something, remotely control a drone, and more. By the end of this book, you will have developed the skills required to build exciting and complex projects with Raspberry Pi Zero W.
Table of Contents (11 chapters)

Voice recognition

At this point, you have had an incredible experience talking to your Raspberry Pi and getting back some answers to your questions. This is not something that Raspberry Pi Zero W can do. As a result, it is important to clarify how this works. In the following figure, you can see that your Raspberry Pi Zero W board is on the left, and as soon as it is triggered with the word Alexa, it changes to Listen mode. In Listen mode, it hears everything you say, and when you stop talking, it processes that speech input and sends it back to Amazon's servers.

Now, these servers somehow find the answers using AI and some other technologies to send the response back to the Raspberry Pi Zero W. As a result, the Raspberry Pi sends the answer as output back to you in your Bluetooth speakers or headphones:

In the preceding image, you can see that the captured audio uses our...