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 8. Project: Keytar

IN THIS CHAPTER

Parts List

Assembly Instructions

Program the Keytar

Play Some Music!

The Next Chapter

Got Lego and a Bricktronics Shield? Start a band, man!
Figure 8-1. Got Lego and a Bricktronics Shield? Start a band, man!

For our next project we’re going to explore the realm of electronic music by building a working guitar-shaped Lego synthesizer! We call it a Keytar, because you mainly play it by pressing buttons. The name may be a stretch, but the project is fun to play with nonetheless!

This project creates crazy electronic music similar to the sounds generated by an Atari Punk Console, a classic electronic instrument of the earliest days of DIY electronic music (see the Atari Punk Console sidebar). Let’s get building!

Parts List

This project has a large number of Lego parts as well as buttons, wires, and other electronic components. We’ll also use new Bricktronics mounting plates (Figure 8-2) to accommodate the buttons, allowing them to slickly connect to the Keytar body.

We’ll attach non-Lego buttons to the Keytar with the help of these nifty Bricktronics mounting plates
Figure 8-2. We’ll attach non-Lego buttons to the Keytar with the help of these nifty Bricktronics mounting plates

Tools & Electronics

You’ll need the following electronics and associated parts to make the Keytar:

  • Arduino Uno

  • Bricktronics Shield

  • Mounting plates for buttons and Arduino

  • Power supply rated for 9V at 1.3A or greater with a 2.1mm center-positive ...

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