Packt+ | Advance your knowledge in tech

All Products

Best Sellers

New Releases

Books

Videos

Audiobooks

Free Learning

Arduino By Example

You're reading from Arduino By Example

Product type Book

Published in Sep 2015

Publisher

ISBN-13 9781785289088

Pages 242 pages

Edition 1st Edition

Languages

Concepts

Single Board Computers

Authors (2):

Adith Jagadish Boloor

Adith Jagdish Boloor

View More author details

Table of Contents (18) Chapters

Arduino by Example

Credits

About the Author

Acknowledgements

About the Reviewers

www.PacktPub.com

Preface

1. Getting Started with Arduino

2. Digital Ruler

3. Converting Finger Gestures to Text

4. Burglar Alarm – Part 1

5. Burglar Alarm – Part 2

6. Home Automation – Part 1

7. Home Automation – Part 2

8. Robot Dog – Part 1

9. Robot Dog – Part 2

10. Robot Dog – Part 3

Index

Using relays to control appliances

Here, we learn what relays are and how they can be used to control everyday electrical/electronic appliances. Also, to make them useful, we will connect them to the Arduino and create a Blink.ino program, except this time it will be your lamp that will be turning on and off.

Understanding the basics of the relay

A relay is basically an electrical device, usually consisting of an electromagnet, which is activated by a passing of current in one circuit to open or close another circuit. You could think of it as a switch that requires current to turn on or off.

Why can't we simply connect a pin of the Arduino to the switchboard, and switch the fan on or off like we do with an LED? Well, an Arduino can output only 2-5V, whereas the fan or any other appliance in your house uses around 200-250V that comes from the electricity grid. This number is different depending on where you are from. Also, we cannot simply connect the Arduino to the switch of the fan because...

The rest of the chapter is locked

Register for a free Packt account to unlock a world of extra content!

A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.

Unlock this book and the full library FREE for 7 days

Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of

Start free trial

Renews at €14.99/month. Cancel anytime}

Authors (2)

Adith Jagadish Boloor

Adith Jagadish Boloor was born in Mangalore, India. He grew up tinkering with toys and gadgets that kindled his interest in how things work. His admiration for science and technology, specifically in the fields of robotics, 3D printing, and smart systems, grew into a passion that he is working towards, nurturing it into a career. He completed his higher studies at Purdue University, USA and Shanghai Jiao Tong University, China and is working towards obtaining a masters degree in robotics. Adith has experience working on robots ranging from simple obstacle—avoiding robots built at home to complex humanoid robots such as the Darwin-OP in Purdue University's research lab. He has coauthored a research paper and has two patents on his name. He enjoys traveling and grabs every opportunity he can to explore the different parts of the world. He is also an international chess player.

See other products by Adith Jagadish Boloor

Adith Jagdish Boloor

<p>Adith Jagadish Boloor was born in Mangalore, India. He grew up tinkering with toys and gadgets that kindled his interest in how things work. His admiration for science and technology, specifically in the fields of robotics, 3D printing, and smart systems, grew into a passion that he is working towards, nurturing it into a career. He completed his higher studies at Purdue University, USA and Shanghai Jiao Tong University, China and is working towards obtaining a masters degree in robotics.</p> <p>Adith has experience working on robots ranging from simple obstacleâ€”avoiding robots built at home to complex humanoid robots such as the Darwin-OP in Purdue University's research lab. He has coauthored a research paper and has two patents on his name.</p> <p>He enjoys traveling and grabs every opportunity he can to explore the different parts of the world. He is also an international chess player.</p>

See other products by Adith Jagdish Boloor

Personalised recommendations for you

Based on your interests and search pattern

Architectural Patterns and Techniques for Developing IoT Solutions

Architectural Patterns and Techniques for Developing IoT Solutions

This book covers all the patterns and considerations that give you both the power and flexibility to build scalable, secure, and performant IoT solutions by combining various patterns in interesting ways. It also lists the benefits of combining IoT with technologies like blockchain, 3D-printing, 5G, Generative AI, quantum computing, and LLMs.

Sep 2023 10 hours 8 minutes

Arduino Data Communications

Arduino Data Communications

Arduino Data Communication focuses on IoT’s Internet aspect, guiding you in setting up your own infrastructure for storing and managing the data collected from sensors. This book goes beyond microcontroller basics, equipping you with the knowledge essential for building real-world projects.

Nov 2023 9 hours 32 minutes

Arduino IoT Cloud for Developers

Arduino IoT Cloud for Developers

From fundamental principles to advanced techniques, this comprehensive book equips you with the knowledge and skills needed to design and deploy IoT applications seamlessly. Explore cloud integration, best practices, and real-world projects to harness the full potential of IoT application development with the Arduino IoT Cloud.

Nov 2023 13 hours 24 minutes

The Azure IoT Handbook

The Azure IoT Handbook

Building IoT Systems with Azure IoT is a comprehensive introduction for those who are new to the Internet of Things and looking to get up to speed in no time. This book will teach you how to create and develop IoT solutions with intelligent edge-to-cloud technologies in the Azure cloud.

Dec 2023 8 hours 16 minutes