Book Image

Mastering Arduino

By : Jon Hoffman
Book Image

Mastering Arduino

By: Jon Hoffman

Overview of this book

Mastering Arduino is an all-in-one guide to getting the most out of your Arduino. This practical, no-nonsense guide teaches you all of the electronics and programming skills that you need to create advanced Arduino projects. This book is packed full of real-world projects for you to practice on, bringing all of the knowledge in the book together and giving you the skills to build your own robot from the examples in this book. The final two chapters discuss wireless technologies and how they can be used in your projects. The book begins with the basics of electronics, making sure that you understand components, circuits, and prototyping before moving on. It then performs the same function for code, getting you into the Arduino IDE and showing you how to connect the Arduino to a computer and run simple projects on your Arduino. Once the basics are out of the way, the next 10 chapters of the book focus on small projects centered around particular components, such as LCD displays, stepper motors, or voice synthesizers. Each of these chapters will get you familiar with the technology involved, how to build with it, how to program it, and how it can be used in your own projects.
Table of Contents (23 chapters)

Circuit diagrams

The following diagrams show how we would connect an AC-powered device and an Arduino to a relay:

The AC-powered device is connected to the relay as described in the Introduction section. The VCC pin on the relay is connected to the 5V out on the Arduino, and the GND pin on the relay is connected to the GND pin on the Arduino. We connect the digital 3 pin on the Arduino to the pin labeled IN on the relay. The digital 3 pin will be used to control the relay.

The following diagram shows how we would use a relay to control a DC motor and 9V power source with the Arduino:

In preceding circuits, we stressed the need to have a common ground between the various components; however, in this circuit, you will notice that there is not a common ground between the Arduino and the motor/9V battery circuit. When using a relay, the circuits on opposite sides of the relay...