Book Image

Internet of Things with Raspberry Pi 3

By : Maneesh Rao
Book Image

Internet of Things with Raspberry Pi 3

By: Maneesh 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)


As we learned in Chapter 2, Know Your Raspberry Pi, Raspberry Pi doesn't have analog inputs, so we will use digital sensors that are easy to use and low on cost as well.

Temperature sensor DS18B20

DS18B20 is a digital temperature sensor manufactured by the Dallas Semiconductor Company. It gives 9-to 12-bit temperature readings.

DS18B20 has three pins, ground (GND), Data line (DQ), and power supply (VDD), as shown in the following diagram:

There is one more package available for these sensors, shown in the following figure, which is a waterproof version of DS18B20:

DS18B20 communicates with Raspberry Pi or any other controller device using the Dallas one-wire communication protocol. Raspberry Pi has provisions...