You are previewing Make: Lego and Arduino Projects.

Make: Lego and Arduino Projects

Cover of Make: Lego and Arduino Projects by John Baichtal... Published by O'Reilly Media, Inc.
  1. Special Upgrade Offer
  2. A Note Regarding Supplemental Files
  3. Foreword
  4. Preface
    1. Assumptions This Book Makes
    2. Contents of This Book
    3. Conventions Used in This Book
      1. Lego CAD Conventions
    4. Using Code Examples
    5. Safari® Books Online
    6. How to Contact Us
    7. Acknowledgments for John
    8. Acknowledgments for Matthew
    9. Acknowledgments for Adam
  5. 1. Project: Drawbot
    1. Parts List
      1. Tools & Electronics
      2. Lego Elements
    2. Assembly Instructions
      1. Build the Lego Model
      2. Attach the Arduino and Bricktronics Shield
      3. Attach the Pen
    3. Program the Robot
      1. Processing and Arduino
      2. Setting Up the Programming Environment
      3. Don’t Forget Your Libraries!
      4. The Arduino Sketch
    4. The Next Chapter
  6. 2. Anatomy of Lego Robotics
    1. Mindstorms
      1. The NXT Brick
      2. Sensors
      3. Motors
      4. Wires
      5. Technic Beams, Mechanics & Connectors
    2. Expanding on the Mindstorms Set
      1. Buying More
      2. Add-On Electronics
      3. Third-Party Bricks
      4. Non-Mindstorms Lego Bricks
      5. Power Functions
    3. Programming Your Brick
    4. The Next Chapter
  7. 3. Arduino Interlude
    1. History of the Arduino Project
    2. What Is OSHW?
    3. Anatomy of the Uno
    4. The Arduino Ecosystem
      1. Uno Alternatives
      2. Older Models
      3. Shields
    5. Arduino Resources
      1. Books
      2. Websites
      3. Code
    6. The Next Chapter
  8. 4. Project: Clock
    1. Parts List
      1. Tools & Electronics
      2. Lego Elements
    2. Assembly Instructions
      1. Prepare the Gear
      2. Build the Lego Model
      3. Install the Arduino
    3. Program the Robot
    4. Setting the Clock
    5. The Next Chapter
  9. 5. Project: Chocolate Milk Maker
    1. Parts List
      1. Tools & Electronics
      2. Beverage Handling
      3. Food
      4. Lego Elements
    2. Assembly Instructions
      1. Build the Pump Assembly
      2. Build the Lego Model
      3. Attach the Syrup Bottle
      4. Build the Mixing Attachment
      5. Wire up and Install the Electronics
    3. Program the Robot
    4. The Next Chapter
  10. 6. Basic Electronic Theory
    1. Basic Concepts in Electricity
      1. Voltage, Current & Resistance
      2. Ohm’s Law
      3. Other Concepts
    2. Know Your Electronic Components
      1. Resistors
      2. Capacitors
      3. Diodes and LEDs
      4. Inductors
      5. Transistors
      6. Integrated Circuits
    3. Sensors 101
      1. Digital Sensors
      2. Analog Sensors
    4. Further Study
  11. 7. Gripperbot
    1. Parts List
      1. Electronics Parts
      2. Lego Elements
    2. Building Instructions
      1. Bracers
      2. Gripperbot
    3. Assembling the Gripperbot’s Electronics
    4. Programming the Gripperbot
    5. The Next Chapter
  12. 8. Project: Keytar
    1. Parts List
      1. Tools & Electronics
      2. Lego Elements
    2. Assembly Instructions
      1. Build the Lego Model
      2. Install the Electronics
    3. Program the Keytar
    4. Play Some Music!
    5. The Next Chapter
  13. 9. Project: Lamp
    1. Parts List
      1. Tools & Electronics
      2. Lego Elements
    2. Assembly Instructions
      1. Build the Lego Model
      2. Install the Electronics
      3. Download and Install the App
    3. Program the Lamp
    4. The Next Chapter
  14. 10. Advanced Techniques
    1. Wiring Up Bricktronics Equivalents
    2. Mounting PCBs to Legos
    3. Adding Molex Connectors to Lego Wires
    4. All About Motors
      1. DC Brushed Motors
      2. Stepper Motors
      3. Hobby Servo Motors
    5. Powering Your Robot
      1. DC Power Jack
      2. USB Connector
      3. Batteries
      4. Battery Dos and Don’ts
    6. NXT to Arduino Communication
    7. XBee Wireless Modules
    8. Epilogue
  15. Index
  16. About the Authors
  17. Colophon
  18. Special Upgrade Offer
  19. Copyright
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Chapter 6. Basic Electronic Theory

IN THIS CHAPTER

Basic Concepts in Electricity

Know Your Electronic Components

Sensors 101

Further Study

What can you do with these obscure components? This chapter will give you the scoop
Figure 6-1. What can you do with these obscure components? This chapter will give you the scoop

The reason that Mindstorms and Arduino can work so well together is that both systems are based on standard electronics components and concepts. In this chapter, you will learn all about basic electronic theory in a practical, project-oriented way. We start with a quick introduction to the basic electronic components like resistors and capacitors. After that we’ll introduce a variety of interesting sensors you might want to use in your own Lego and Arduino projects.

Basic Concepts in Electricity

Let’s learn a bit about some basic electricity concepts such as voltage and current. Electricity is the physical phenomenon of moving electric charges (electrons), but for most of the things we’ll do, it’s simply the flow of electrons through metal wires and circuit components. The three most important properties of the flow of electricity in a circuit are the voltage, the current, and resistance.

Voltage, Current & Resistance

Voltage

Sometimes called “electric potential,” this is a measurement of how much the electrons want to move from one location to another. The way it works is that the higher the voltage, the stronger the “pressure” for the electrons to move from one ...

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