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Internet of Things with Raspberry Pi 3

Internet of Things with Raspberry Pi 3

By : Rao
4.3 (3)
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Internet of Things with Raspberry Pi 3

Internet of Things with Raspberry Pi 3

4.3 (3)
By: Rao

Overview of this book

This book is designed to introduce you to IoT and Raspberry Pi 3. It will help you create interesting projects, such as setting up a weather station and measuring temperature and humidity using sensors; it will also show you how to send sensor data to cloud for visualization in real-time. Then we shift our focus to leveraging IoT for accomplishing complex tasks, such as facial recognition using the Raspberry Pi camera module, AWS Rekognition, and the AWS S3 service. Furthermore, you will master security aspects by building a security surveillance system to protect your premises from intruders using Raspberry Pi, a camera, motion sensors, and AWS Cloud. We'll also create a real-world project by building a Wi-Fi – controlled robot car with Raspberry Pi using a motor driver circuit, DC motor, and a web application. This book is a must-have as it provides a practical overview of IoT’s existing architectures, communication protocols, and security threats at the software and hardware levels—security being the most important aspect of IoT.
Table of Contents (11 chapters)
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HTTP

The Hyper Text Transfer Protocol (HTTP) is one of most widely used application protocols for communicating over the internet. HTTP is a request-response, client-server protocol, where a client sends a request to a server for information and the server respond with the results.

HTTP is a stateless protocol. When a client sends a request to the server, it maintains a connection with the server only until the server responds or a connection times out. For each request, a new connection must be established. With the help of the diagram in Figure 3.3, let's understand response-request architecture:

Figure 3.3

The client sends a request to the server. A request consists of the HTTP version, HTTP method, URL, and arguments or the message body:

  • The Uniform Resource Locator (URL) consists of four parts:
    • Protocol: It is the application-level protocol used by the client for...

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