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Mastering Arduino

You're reading from   Mastering Arduino A project-based approach to electronics, circuits, and programming

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781788830584
Length 372 pages
Edition 1st Edition
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Author (1):
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Jon Hoffman Jon Hoffman
Author Profile Icon Jon Hoffman
Jon Hoffman
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Table of Contents (23) Chapters Close

Preface The Arduino FREE CHAPTER Basic Electronics Circuit Diagrams Basic Prototyping Arduino IDE Programming the Arduino - The Basics Programming the Arduino - Beyond the Basics Motion Sensor Environment Sensors Obstacle Avoidance and Collision Detection Fun with Lights Fun with Sound Using LCD Displays Speech Recognition and Voice Synthesizing DC Motors and Motor Controllers Servo Motors Using a Relay Remotely Controlling the Arduino Creating a Robot Bluetooth LE Bluetooth Classic Another Book You May Enjoy

Using a Relay

There are times where we want to control higher voltage items such as a light, fan or any other household appliance. However, the Arduino and every project so far in this book uses direct current (DC) while your household appliances use alternating current (AC). There are significant differences between AC and DC. In this chapter, we will look at how we can use a relay with an Arduino to control a lamp that runs on AC.

In this chapter, you will learn:

  • What a relay is 
  • How to use a relay to control an AC-powered device
  • How to use a relay to control a DC-powered device
  • How to isolate circuits using a relay
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