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Delphi Cookbook

You're reading from   Delphi Cookbook Recipes to master Delphi for IoT integrations, cross-platform, mobile and server-side development

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Product type Paperback
Published in Jul 2018
Publisher
ISBN-13 9781788621304
Length 668 pages
Edition 3rd Edition
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Tools
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Authors (2):
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Daniele Teti Daniele Teti
Author Profile Icon Daniele Teti
Daniele Teti
Daniele Spinetti Daniele Spinetti
Author Profile Icon Daniele Spinetti
Daniele Spinetti
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Toc

Table of Contents (12) Chapters Close

Preface 1. Delphi Basics FREE CHAPTER 2. Becoming a Delphi Language Ninja 3. Knowing Your Friends – The Delphi RTL 4. Going Cross-Platform with FireMonkey 5. The Thousand Faces of Multithreading 6. Putting Delphi on the Server 7. Linux Development 8. Riding the Mobile Revolution with FireMonkey 9. Using specific platform features 10. Delphi and IoT 11. Other Books You May Enjoy

How to drive multiple relays with Arduino and Delphi

A relay is a component that's able to open or close a circuit depending on the presence or absence of voltage at the input. In practice, it is a switch operated by an electromagnet. Let's understand this basic concept, learn how to open and close a circuit and make it programmable, and understand well how this is the starting point to open up more complex and interesting scenarios such as the remote control of devices, home automation, and more.

In this recipe, we will see how to open and close a circuit using a Relay Module and how to make its use programmable through a Delphi application.

Getting ready

The purpose of this recipe is to turn two different light...

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