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Overview
Arduino Playground will show you how to keep your hardware hands busy with a variety of intermediate builds, both practical and just-for-fun. Advance your engineering and electronics know-how as you work your way through these 10 complex projects:
–A reaction-time game that leverages the Arduino’s real-time capabilities
–A tool for etching your own printed circuit boards
–A regulated, variable-voltage power supply
–A kinetic wristwatch winder decked out with LEDs
–A garage parking assistant that blinks when your vehicle is perfectly parked
–A practical and colorful pH meter
–A ballistic chronograph that can measure the muzzle velocity of BB, Airsoft, and pellet guns
–A battery saver that prevents accidental discharge
–A square-wave generator
–A thermometer that tells the temperature using a sequence of colored LEDs
Each project begins with a list of required tools and components, followed by the instructions, full sketch, and circuit board templates for the build, as well as directions for building a permanent enclosure. You’ll even find the author’s design notes, which are sure to provide inspiration for your own inventions.
Gather your parts, break out the soldering iron, and get ready to take your Arduino skills to the next level with Arduino Playground.
Uses the Arduino Nano and Pro Mini boards.
Product Details
| ISBN-13: | 9781593277444 |
|---|---|
| Publisher: | No Starch Press |
| Publication date: | 03/15/2017 |
| Pages: | 344 |
| Product dimensions: | 6.90(w) x 8.70(h) x 1.00(d) |
About the Author
Table of Contents
Acknowledgments xvii
Introduction xix
Who This Book Is For xx
How This Book Is Organized xx
About the Parts Lists xxii
Tools and Supplies xxiii
Drilling, Cutting, and Assembling xxiii
Prototyping, Soldering, and Testing xxiv
Online Retailers xxv
About the Online Resources xxv
0 Setting Up and Useful Skills 1
Preparing the Arduino Board 2
Affixing the 12C Board to the LCD 3
Uploading Sketches to Your Arduino 5
Installing the Arduino IDE 5
Using the Arduino IDE 5
Connecting and Programming an Arduino Nano 6
Connecting and Programming an Arduino Pro Mini 8
Using PCB Software 11
Making Your Own PCBs 13
Applying the Pattern 14
Etching the Board 15
Drilling the Board 17
Connectors Used in This Book 18
Using SOICs 20
What Are SMT Devices? 21
The Solder Paste Method 23
Soldering Directly 24
Closing Thoughts 24
1 The Reaction-Time Machine 25
Required Tools 26
Paris List 26
Downloads 27
Reaction vs. Reflex 27
How Does the Game Work? 28
Measuring Time with the Arduino Nano 28
Expected Speed Ranges 29
The Schematic 29
The Breadboard 30
The Sketch 32
Customized Reaction Commentary 35
What Happens in the Loop 36
Construction 37
Preparing a Sturdy Case 37
Mounting the Hardware 38
Ideas for Customization 40
2 An Automated Agitator for PCB Etching 41
Required Tools 43
Parts List 43
Downloads 44
How Automatic Motor Reversal Works 44
The Schematic 45
Determining the Reversal Threshold 46
Using an H-Bridge 48
The Breadboard 50
The Sketch 53
The Shield 57
PCB Layout 57
Shield Design Notes 58
Construction 60
The Limit Wires 62
The Crank Bushing 63
Packaging 64
The Etching Process 66
3 The Regulated Power Supply 69
Required Tools 70
Parts List 70
Downloads 71
A Flexible Voltage Regulator Circuit 72
How the Circuit Works 73
The Schematic 75
The Breadboard 76
Preparing the Arduino Pro Mini and LCD 76
Building the Breadboard 77
The Sketch 79
The Shield 80
Construction 82
Preparing the Enclosure 83
Mounting the Circuit Board 85
4 A Watch Winder 89
Why a Watch Winder? 90
Required Tools 93
Parts List 93
Acrylic 93
Other Hardware and Circuit Components 94
Downloads 95
Basic Watch Winder Requirements 95
Using an Arduino to Control Winder Revolutions 96
Using a Hall Effect Sensor to Monitor Rotations 96
The Schematic 97
The Breadboard 98
The Sketch 102
The Shield 108
Overview of the Motor Assembly 110
Construction 110
Preparing the Motor Mount and Bearing Box Acrylic 111
Bonding the Acrylic for the Bearing Box 114
Building the Stand 115
Preparing the Motor and the Driveshaft 116
Making the Watch Basket 120
Adding the LEDs 122
Leaving the Components on Display 123
Keeping the Watches in the Basket 124
Design Notes 124
Total Rotation Adjustment 124
How Many LEDs to Use and Where to Put Them 125
Motor Voltage 126
How Many Rotations Does the Watch Winder Make? 126
5 The Garage Sentry Parking Assistant 129
Required Tools 130
Parts List 130
Deluxe Parts 132
Downloads 132
The Schematic 132
Basics of Calculating Distance 133
How the Garage Sentry Works 134
The Breadboard 136
The Sketch 138
Inside the setup() Function 140
Inside the loop() Function 140
Determining Distance 141
Triggering the Alarm 142
Construction 143
Drilling Holes for the Electronics 144
Mounting Options 145
Soldering the Transistors and Current-Limiting Resistors 147
Wiring the Pieces Together 147
The Deluxe Garage Sentry 148
The Deluxe Schematic 148
The Deluxe Sketch 149
The Deluxe Shield 151
A Bigger Box 152
6 The Battery Saver 155
Boats, Tractors, and Other Vehicles 157
Required Tools 157
Parts List 159
Downloads 160
The Schematic 160
How the Battery Saver Prevents Draining 162
Arduino to the Rescue 163
The Breadboard 164
The Sketch 167
The Shield 168
The PCB Layout 168
Preparing the Shield and Pro Mini Controller 169
Construction 170
Preparing the Enclosure 171
The Contact Support 172
Preparing the Copper Contact Assembly 173
Mounting Supplies for the Solenoid 175
Preparing the Release Rod, Springs, and E-Clip 175
Making the Release Lever and Pylon 176
Assembling All the Parts 178
Installing the Battery Saver into a Vehicle 180
Operating the Battery Saver 180
Normal Operation 180
Setting the Threshold Voltage 181
Protection from the Environment 182
Applying Cool Amp 182
7 A Custom Ph Meter 185
Why Build Your Own pH Meter? 186
Required Tools 187
Parts List 187
Downloads 189
About the pH Probe 189
The Schematic 191
Integrating the High-Impedance Probe 193
General Design Notes 193
The Op-Amp Circuit in Detail 195
Some Notes on IC Selection 196
Preparing the LCD 196
The Breadboard 197
Calibrating the Custom pH Meter 201
About the Effects of Temperature 203
Adding a Temperature Sensor 204
Checking Accuracy 204
The Sketch 205
Smoothing the pH and Temperature Output 208
Centering an Analog Meter 208
The Shield 210
Construction 211
The Custom pH Meter Enclosure 212
Mounting the Circuit Board 214
Installing the Other Hardware 214
8 Two Ballistic Chronographs 217
What Is a Ballistic Chronograph? 219
Commercial Chronographs 219
Measuring Muzzle Velocity 219
This Project's Approach 220
The Chronograph Lite 221
Required Tools 221
Parts List 221
Downloads 222
The Schematic 222
Building a Test Bed 222
The Breadboard 224
The Sketch 226
Construction 230
The Full Ballistic Chronograph 233
Required Tools 234
Parts List 234
Downloads 235
Improving the Accuracy 235
Designing the Full Ballistic Chronograph 238
The Schematic 239
The Sketch 241
The Shield 242
Soldering the Full Ballistic Chronograph 244
Construction 245
The Sensor Channel 247
Building the Sensor Channel 247
Optoschmitt Light Sensors and UV LEDs 250
Sensor Umbilical Cable 251
Final Setup and Operation 252
Using the Full Ballistic Chronograph 253
Using the Chronograph Lite 253
9 The Square-Wave Generator 255
Why Build a Square-Wave Generator? 256
What Is a Square Wave? 256
Why Square Waves Are Useful 257
A Frequency Counter 258
Shortcomings of the Square-Wave Generator 259
Required Tools 260
Parts List 260
Downloads 262
The Schematic 262
Important Notes on the Pro Mini 263
How the Square-Wave Generator Was Developed 264
Deciding How to Generate Signals 265
Planning How to Display the Frequency 265
Signal Integrity 266
Fine-tuning with a Decade Counter 268
The Oscillator in Detail 268
The Breadboard 269
The Sketch 271
The Shield 272
Construction 273
Preparing the Enclosure 274
Wiring She Electronics 276
Design Notes and Mods 277
Displaying Frequency in Other Units 277
Reading External Input Frequencies 277
Battery Power 278
10 The Chromatic Thermometer 279
Choosing a Temperature Sensor 280
Required Tools 282
Parts List 282
Downloads 284
How the Chromatic Thermometer Works 284
The Schematic 284
The Breadboard 286
The Sketches 288
Sketch for the LM35 System 289
Sketch for the MCP9808 System 292
How the Temperature Readouts Work 296
The Shield 296
Construction 298
Using the Chromatic Thermometer 301
Index 303