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Building Smart Homes with Raspberry Pi Zero

You're reading from Building Smart Homes with Raspberry Pi Zero Build revolutionary and incredibly useful home automation projects with the all-new Pi Zero

Product type Paperback

Published in Oct 2016

Publisher Packt

ISBN-13 9781786466952

Length 196 pages

Edition 1st Edition

Tools

Raspberry Pi

Concepts

Single Board Computers

Author (1):

Marco Schwartz

View More author details

Table of Contents (12) Chapters

Preface

1. Configuring Your Raspberry Pi Zero Board

2. Measure Data Using Your Raspberry Pi Zero Board FREE CHAPTER

3. Building a Smart Home Thermostat

4. Controlling Appliances fromthe Raspberry Pi Zero

5. Making a Smart Plug with the Raspberry Pi Zero

6. Sending Notifications using Raspberry Pi Zero

7. Use the Raspberry Pi Zero to Build a Security System

8. Monitor Your Home from the Cloud

9. Control Appliances from Anywhere

10. Building a Home Automation System with Raspberry Pi Zero Boards

Index

Controlling the speed of a DC motor

In any smart home, chances are you will find a DC motor somewhere that you will need to automate. It could, for example, be on electric window blinds, or on an automated garage door. In this section, we are going to see how to control the speed of a simple DC motor and you will then be able to apply this to any motors you already have in your home.

Let's first see how to connect the DC motor to your Raspberry Pi Zero board. We actually won't connect the motor directly to the Raspberry Pi, as this would require a lot of external components, such as transistors, diodes, and so on. Instead, we'll use the L293D chip, which is a dedicated IC to control DC motors.

First, place the L293D on the board. The following diagram shows the pinout of the L293D:

You basically need to connect the components to the L293D as follows:

GPIO14 of the Raspberry Pi to pin 1A
GPIO15 of the Raspberry Pi to pin 2A
GPIO18 of the Raspberry Pi to pin 1,2EN
DC motor to pin 1Y and 2Y
5V of the...

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Authors (1)

Marco Schwartz

Marco Schwartz

Marco Schwartz is an electrical engineer, entrepreneur, and blogger. He has a master's degree in electrical engineering and computer science from Supélec, France, and a master's degree in micro engineering from the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland. He has more than five years' experience working in the domain of electrical engineering. Marco's interests center around electronics, home automation, the Arduino and Raspberry Pi platforms, open source hardware projects, and 3D printing. He has several websites about the Arduino, including the Open Home Automation website, which is dedicated to building home automation systems using open source hardware. Marco has written another book on home automation and the Arduino, called Home Automation With Arduino: Automate Your Home Using Open-source Hardware. He has also written a book on how to build Internet of Things projects with the Arduino, called Internet of Things with the Arduino Yun, by Packt Publishing.

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