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  • Book Overview & Buying Getting Started with Raspberry Pi Zero
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Getting Started with Raspberry Pi Zero

Getting Started with Raspberry Pi Zero

By : Richard Grimmett
4.7 (3)
Buy this Book
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Getting Started with Raspberry Pi Zero

Getting Started with Raspberry Pi Zero

4.7 (3)
By: Richard Grimmett
Buy this Book

Overview of this book

Raspberry Pi Zero is half the size of Raspberry Pi A, only with twice the utility. At just three centimeters wide, it packs in every utility required for full-fledged computing tasks. This practical tutorial will help you quickly get up and running with Raspberry Pi Zero to control hardware and software and write simple programs and games. You will learn to build creative programs and exciting games with little or no programming experience. We cover all the features of Raspberry Pi Zero as you discover how to configure software and hardware, and control external devices. You will find out how to navigate your way in Raspbian, write simple Python scripts, and create simple DIY programs.
Table of Contents (11 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
Free Chapter
1
1. Getting Started with Raspberry Pi Zero
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1. Getting Started with Raspberry Pi Zero
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Setting up the Raspberry Pi Zero
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Powering the board
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Hooking up a keyboard, mouse, and display
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Installing the operating system
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Adding Internet access
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Summary
2
2. Programming Raspberry Pi Zero
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2. Programming Raspberry Pi Zero
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Powering up Raspberry Pi Zero with Linux
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Creating, editing, and saving files
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Creating and running Python programs
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Basic programming constructs on Raspberry Pi Zero
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Summary
3
3. Accessing the GPIO Pins on Raspberry Pi Zero
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3. Accessing the GPIO Pins on Raspberry Pi Zero
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The GPIO capability of Raspberry Pi Zero
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Simple GPIO digital voltage output
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Adding a sonar sensor
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Connecting a digital compass to Raspberry Pi Zero
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Accessing the compass programmatically
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Summary
4
4. Building and Controlling a Simple Wheeled Robot
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4. Building and Controlling a Simple Wheeled Robot
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The basic platform
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Controlling an H-bridge interface to the DC motors
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Controlling your mobile platform programmatically using the Raspberry Pi Zero
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Controlling the speed of your motors with PWM
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Using a motor controller board to control the DC motors
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Controlling the vehicle using the Raspberry Pi Zero in Python
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Planning your path
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Summary
5
5. Building a Robot That Can Walk
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5. Building a Robot That Can Walk
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Robots that can walk
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How servo motors work
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Building the quadruped platform
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Using a servo controller to control the servos
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Communicating between the servo controller and a PC
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Connecting the servo controller to the Raspberry Pi Zero
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Creating a program in Linux to control your quadruped
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Summary
6
6. Adding Voice Recognition and Speech – A Voice Activated Robot
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6. Adding Voice Recognition and Speech – A Voice Activated Robot
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Communication between the Raspberry Pi Zero and the robot
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Giving your robot voice commands
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Using eSpeak to allow your robot to respond with an audible voice
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Using pocketsphinx to accept your voice commands
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Interpreting commands and initiating actions
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Summary
7
7. Adding Raspberry Pi Zero to an RC Vehicle
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7. Adding Raspberry Pi Zero to an RC Vehicle
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Configuring and controlling an RC car with Raspberry Pi Zero
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Controlling the RC car in Python
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Accessing the RC car remotely
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Connecting a webcam
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Summary
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8. Playing Rock, Paper, or Scissors with Raspberry Pi Zero
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8. Playing Rock, Paper, or Scissors with Raspberry Pi Zero
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A robotic hand
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Moving the robotic hand
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Connecting the servo controller to the Raspberry Pi Zero
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Creating a program on Raspberry Pi Zero so that you can control your hand
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Installing a USB camera on Raspberry Pi Zero
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Downloading and installing OpenCV – a fully featured vision library
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Gesture detection
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Summary
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9. Adding Raspberry Pi Zero to a Quadcopter
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9. Adding Raspberry Pi Zero to a Quadcopter
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Constructing the platform
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Mission planning software
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Summary
10
Index
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Index

Connecting a digital compass to Raspberry Pi Zero

Now you've created some pretty basic connections to Raspberry Pi Zero, turning lines on and off and sensing a high or low signal. Now let's explore one of the other interfaces available on Raspberry Pi Zero, the I2C interface. To do this, you'll connect a digital compass with this sort of interface.

Note

For more on the I2C interface, see http://www.robot-electronics.co.uk/i2c-tutorial.

There are several chips that provide digital compass capability; one of the most common is the HMC5883L, a 3-axis digital compass chip. This chip is packaged in a module by several companies but almost all of them result in a similar interface.

Here is an image of the GY-271 HMC5883L, a triple-axis compass magnetometer sensor module available with a number of online retailers:

Connecting a digital compass to Raspberry Pi Zero

This type of digital compass uses magnetic sensors to measure the earth's magnetic field. The output of these sensors is then made accessible to the outside world through...

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