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)

Introduction

The DHT11 is a low-cost temperature and humidity sensor. This sensor uses a thermistor to measure the temperature. The word thermistor is a combination of thermal (temperature) and resistor because it is a type of resistor where the resistance is highly sensitive to temperature even more so than a normal resistor. The current temperature can be determined based on the output voltage of the thermistor.

When working with a thermistor, the first thing we need to do is to determine how to calculate the temperature based on the output voltage. With the TMP36 temperature sensor that we used with the prototype that was created in Chapter 4, Basic Prototyping, we could easily calculate the temperature based on the output voltage of the sensor with a basic formula of (voltage - 0.5) * 100.0 because it uses a solid-state technique to determine the temperature. This is...