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Raspberry Pi Robotics Essentials

Raspberry Pi Robotics Essentials

By : Richard Grimmett
4 (7)
Buy this Book
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Raspberry Pi Robotics Essentials

Raspberry Pi Robotics Essentials

4 (7)
By: Richard Grimmett
Buy this Book

Overview of this book

If you are a programmer with an interest in building advanced robotics projects using inexpensive hardware and open source software, then this book is for you. Some experience with computer programming and implementing simple mechanical systems is required.
Table of Contents (9 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
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1
1. Configuring and Programming Raspberry Pi
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1. Configuring and Programming Raspberry Pi
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Configuring Raspberry Pi – the brain of your robot
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Installing the operating system
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Adding a remote graphical user interface
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Programming on Raspberry Pi
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Summary
2
2. Building the Biped
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2. Building the Biped
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Building robots that can walk
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How servo motors work
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Building the biped platform
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Using a servo controller to control the servos
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Communicating with the servo controller with a PC
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Connecting the servo controller to the Raspberry Pi
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Creating a program to control your biped
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Summary
3
3. Motion for the Biped
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3. Motion for the Biped
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A basic stable pose
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A basic walking motion
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A basic turn for the robot
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Summary
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4. Avoiding Obstacles Using Sensors
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4. Avoiding Obstacles Using Sensors
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Connecting Raspberry Pi to an infrared sensor
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Connecting Raspberry Pi to a USB sonar sensor
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Summary
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5. Path Planning and Your Biped
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5. Path Planning and Your Biped
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Connecting a digital compass to the Raspberry Pi
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Accessing the compass programmatically
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Dynamic path planning for your robot
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Summary
6
6. Adding Vision to Your Biped
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6. Adding Vision to Your Biped
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Installing a camera on your biped robot
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Downloading and installing OpenCV – a fully featured vision library
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Edge Detection and OpenCv
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Color and motion finding
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Summary
7
7. Accessing Your Biped Remotely
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7. Accessing Your Biped Remotely
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Adding a wireless dongle and creating an access point
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Adding a joystick remote control
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Adding the capability to see remotely
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Summary
8
Index
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Index

How servo motors work

Servo motors are somewhat similar to DC motors. However, there is an important difference. While DC motors are generally designed to move in a continuous way—rotating 360 degrees at a given speed—servos are generally designed to move to a limited set of angles. In other words, in the DC motor world, you generally want your motors to spin with a continuous rotation speed that you control. In the servo world, you want your motor to move to a specific position that you control.

This is done by sending a Pulse-Width-Modulated (PWM) signal to the control connector of the servo. The length of this pulse will control the angle of the servo like this:

These pulses are sent out with a repetition rate of 60 Hz. You can position the servo to any angle by setting the correct control pulse.

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Tech Concepts
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Programming languages
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Raspberry Pi Robotics Essentials
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