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Arduino Essentials

Arduino Essentials

By : Perea
5 (5)
Buy this Book
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Arduino Essentials

Arduino Essentials

5 (5)
By: Perea
Buy this Book

Overview of this book

If you are a hobbyist who wants to develop projects based on Arduino as the main microcontroller platform or an engineer interested in finding out what the Arduino platform offers, then this book is ideal for you. Some prior knowledge of the C programming language is required.
Table of Contents (12 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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Disclaimer
Free Chapter
1
1. Meeting the Arduino Family
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1. Meeting the Arduino Family
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A game changer
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Common features
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Just one to rule them all
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Users teaching users
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Summary
2
2. The Arduino Development Environment
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2. The Arduino Development Environment
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A multiplatform tool
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Downloading the package
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Installing the software
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Installing the drivers
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Running the Arduino development environment for the first time
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Preflight checks
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Uploading our first sketch
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Main menus and commands
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The Arduino language
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Summary
3
3. Interacting with the Environment the Digital Way
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3. Interacting with the Environment the Digital Way
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Digital versus analog signals
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Our first circuit
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Summary
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4. Controlling Outputs Softly with Analog Outputs
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4. Controlling Outputs Softly with Analog Outputs
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Dealing with analog signals
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The analog output circuit
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Connections diagram
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Analog control through code
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Motor control with a transistor
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Summary
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5. Sensing the Real World through Digital Inputs
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5. Sensing the Real World through Digital Inputs
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Sensing by using inputs
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Connecting a button as a digital input
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The momentary push button
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Complete circuit schematic
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Breadboard connections diagram
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Writing code to react to a press
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Timing and debouncing
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Other types of digital sensors
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Using an optocoupler as a coin detector
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The schematic of the coin detector
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The breadboard connections diagram
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The complete example code
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A real working project
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Summary
6
6. Analog Inputs to Feel Between All and Nothing
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6. Analog Inputs to Feel Between All and Nothing
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Sensing analog values
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The Arduino map function
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An ambient light meter
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An ambient light meter circuit
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DC motor speed control revisited
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Summary
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7. Managing the Time Domain
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7. Managing the Time Domain
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Time control functions
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Making some noise
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A bigger project – a metronome
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Summary
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8. Communicating with Others
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8. Communicating with Others
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Serial communications concepts
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Other types of serial communication
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Calibrating sensors serially
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Sending data to Arduino
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A computer connected dial thermometer
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Summary
9
9. Dealing with Interrupts
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9. Dealing with Interrupts
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The concept of an interruption
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The tachograph project
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A dial tachograph
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Summary
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10. Arduino in a Real Case – Greenhouse Control
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10. Arduino in a Real Case – Greenhouse Control
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A greenhouse controller
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The greenhouse controller code
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Summary
11
Index
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Index

The tachograph project

To understand and manage interrupts in our projects, I would like to offer you a very particular one, a tachograph, a device that is present in all our cars and whose mission is to account for revolutions, normally the engine revolutions, but also in brake systems such as an Anti-lock Brake System (ABS) and others.

Mechanical considerations

Well, calling it mechanical perhaps is too much, but let's consider how we are going to make our project account for revolutions.

For this example project, I have used a small DC motor driven through a small transistor and, like in lots of industrial applications, an encoded wheel is a perfect mechanism to read the number of revolutions. By simply attaching a small disc of cardboard perpendicularly to your motor shaft, it is very easy to achieve it.

By using our old friend, the optocoupler, we can sense something between its two parts, even with just a piece of cardboard with a small slot in just one side of its surface.

Here, you can...

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