نام کتاب: Building Multicopter Video Drones
About This Book
Capture mind-blowing video from the sky and impress your friends and colleagues Choose and configure components to build your own multicopter Fully illustrated and written in a conversational manner
Who This Book Is For
This book is for a wide range of individuals who are looking to shoot aerial footage with a multicopter. No previous flying experience is assumed, but even the most expert flyers will find unexpected and interesting information.
What You Will Learn
Discover the physics of multicopter flight Browse through the plethora of turnkey systems to choose a fabricated platform that suits your needs Get acquainted with safety precautions to minimize your legal and financial liability Calculate the specifications of the components you’re purchasing to maximize flight time and performance Program and calibrate the guidance system of your drone Familiarize yourself with the key maneuvers for cinematic multicopter videography Understand post-production editing and preparation techniques to improve your multicopter footage
Multicopters have revolutionized the television and film industry. For the cost of just a few hours of traditional helicopter rental, videographers and cinematographers can own a multicopter drone that shoots stunning aerial shots that helicopter pilots can only dream of. This book is a practical guide that aims to help you learn how to build, fly, and program your own drone.
The book starts by explaining the physics of multicopter flight and then walks you through all of the decision processes when choosing a platform. From turnkey systems to custom-built multicopters, you will not only comprehend the working of the components, but also gauge why the choices you make are crucial and how they affect your flight. As you go through the book, you will gain a firm grip on the principles, choices, and safety issues involved in a multicopter flight.
Finally, it will teach you the maneuvers to capture great camera movements and explain the intricacies of stabilizing them in post-production. In short, you will be well on your way to becoming a professional multicopter videographer.
Ty Audronis has over a decade of experience in radio-controlled videography and cinematography and over two decades as a professional in the entertainment industry. He has shot footage for Investigation Discovery, Travel Channel, and countless other productions. He also runs his own production company, Audronis Media. Ty has also written many magazine articles on multicopter and drone videography and has acted as a consultant on many productions. He has also taught at several film schools and University classes on production and post-production processes (as well as the Internet technology). His education is in Computer Animation and Special Effects, and he has also written the book, Lightning Fast Animation with Element 3D, Packt Publishing. He is also an expert on visual technology and workflows. For more information on Ty, please feel free to visit http://www.audronis.com.
Chapter 1: What is a Multicopter? 5
How do multicopters fly? 6
A multicopter’s yaw control 7
The principles of multicopter lift 8
How a multicopter moves 8
What’s in a multicopter? 10
The airframe 10
Motors and propellers 11
The electronic speed control 12
The guidance system (the brain) 13
Camera gimbals and transmitters 15
Radio systems 16
Chapter 2: Buying a Turnkey System 19
Why choose a turnkey system? 19
If someone is selling it, it probably works … right? 20
Where to look for reviews and advice you can trust 21
Online communities – the new consumer reports 22
RCgroups.com – the largest of the communities 23
YouTube.com – your source for user reviews, warnings, and tests 23
Other sites that can be used 24
What to expect for your budget… 24
Setting realistic expectations 24
Brands you can trust 25
For GoPro shooting 26
Bigger cameras 27
Table of Contents
[ ii ]
Chapter 3: Choosing Your Components 29
What kind of drone should I build? 29
How many rotors should it have? 30
Redundancy versus stability 30
The calculations you’ll need 31
Choosing your airframe 32
Carbon fiber versus aluminum 32
Choosing your propellers 34
Selecting your motor 36
Selecting the ESCs 38
Powering your multicopter – the battery 40
Tweaking your specifications for better results 42
Delving into camera gimbals 44
The multicopter brain – the guidance system 48
Multicopter guidance system sensor types 48
Global Positioning System 48
The compass 50
Measuring your altitude 51
Keep your attitude in check 52
The CPU of your brain 53
The final choice for guidance 53
ArduPilot (APM:chopper) 54
The human interface 56
The final component list and cost 57
Chapter 4: Assembling Your Drone 59
Building the airframe 59
Connecting components 61
Connecting a brushless motor 61
What’s a CAN bus? 62
Placing the sensors 63
Programming your guidance system and remote 64
Exploring the WooKong software 65
Setting your motor configuration 66
RC calibration 68
Motor settings 69
Setting up your batteries 70
Table of Contents
[ iii ]
Chapter 5: Flying Your Multicopter 73
Get a simulator! 73
Thinking in three dimensions 74
Where to fly 75
When to fly 75
How you should fly 75
The preflight checklist 76
Your multicopter’s maiden flight 77
Battery calibration 77
Arming and flying your multicopter 79
What is ground effect? 79
Watch out for prop wash 82
Take it slow 82
Chapter 6: First Person View (FPV) Gear 83
Components of an FPV system 83
The Camera 84
CCD versus CMOS 84
Onscreen display (OSD) 86
The transmitter and receiver 86
Video monitors 87
Some general guidelines 88
Rules for flying 88
Priority 1 – safety for the public 88
Priority 2 – follow the law 89
Priority 3 – safety for your aircraft and camera 90
Priority 4 – get the shot 90
Chapter 7: Camera Flying Techniques 91
Executing camera moves 91
Crane shots 91
Dolly shots 93
Fly-through shots 94
Orbit-by shots 95
The 360 orbit 96
Indoor flying considerations 97
Experiencing an autonomous flight 98
Table of Contents
[ iv ]
Chapter 8: Post Processing 101
Cutting your clips into segments 101
Using Adobe’s Warp Stabilizer 103
Let’s face it … multicopters are cool. If they weren’t, you wouldn’t have an interest in this book! They look like something straight out of science fiction, with their exposed wires, spinning blades, and mean profile. But, how do you sift through the plethora of information and opinions on the Web and at your local hobby shop? And what the heck is a gimbal?
This book is an introduction to the world of multicopters, presented in a casual and conversational way. Although examples, opinions, and advice are given in these pages … the principles and information you’ll need to make your own decisions are given to you in a practical way. Even the most experienced multicopter pilots will find something in these pages new to them.
What this book covers
Chapter 1, What is a Multicopter?, provides a very basic overview of how multicopters fly and what components they use.
Chapter 2, Buying a Turnkey System, gives you an overview of the systems out there, the pitfalls of choosing cheap versus reliable, and where to get good information about turnkey systems.
Chapter 3, Choosing Your Components, provides an in-depth look at the components of a multicopter system and the calculations needed to choose the right parts.
Chapter 4, Assembling Your Drone, is a brief walkthrough of the wiring diagram and best practices for building a multicopter.
Chapter 5, Flying Your Multicopter, prepares you for the first flight of your multicopter, maidening, and practicing.
Chapter 6, First Person View (FPV) Gear, explains how to add an FPV system to your multicopter in order to fly it as if you were onboard.
Chapter 7, Camera Flying Techniques, discusses how to effectively use your new skills to get great camera shots and a stunning flying experience.
Chapter 8, Post Processing, explains how to stabilize and prepare clips for editing.
What you need for this book
For this book, you’ll need a strong interest in flying a multicopter and a working knowledge of basic math. It helps to be mechanically minded. In the final chapter, we’ll be using Adobe Premiere Pro CC 2014.
Who this book is for
This book is for experts and beginners to the multicopter world alike. It’s tailored to those who aspire to eventually become professionals in shooting aerial imagery.
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