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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
Lock 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
4
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
5
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
7
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
8
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
10
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 greenhouse controller code

Since the code of this project is perhaps a little longer than the previous examples, I will present it first by sections without comments and include the complete code for reference at the end of this chapter.

Libraries and constant definitions

We begin our code by including the servo library that we will use to deal with the servomotor that will operate the retractable roof. We define constants that will be used all along the code as follows:

#include <Servo.h>

#define redLedPin 13
#define yellowLedPin 12
#define greenLedPin 11
#define relayPin 8
#define motorPin 6
#define buzzerPin 4
#define servoPin 3
#define buttonPin 2
#define potentiometerPin 2
#define thermistorPin 1
#define photocellPin 0
#define NOTE_A4 440
#define NOTE_A3 220
#define TEMPMIN 820
#define TEMPMAX 850
#define MEDIUMPOWER 128
#define FULLPOWER 255
#define BEGINWATERING 700
#define ENDWATERING 550
#define DAYLIGHT 400

Here is a breakdown of the 20 constants used in the preceding code...

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Tech Concepts
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Programming languages
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Arduino Essentials
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