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Raspberry Pi Robotic Projects

You're reading from   Raspberry Pi Robotic Projects Work through a mix of amazing robotic projects using the Raspberry Pi Zero or the Raspberry Pi 3

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Product type Paperback
Published in Oct 2016
Publisher
ISBN-13 9781786467966
Length 238 pages
Edition 3rd Edition
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Authors (2):
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Jon Witts Jon Witts
Author Profile Icon Jon Witts
Jon Witts
Richard Grimmett Richard Grimmett
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Richard Grimmett
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Table of Contents (13) Chapters Close

Raspberry Pi Robotic Projects - Third Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
1. Getting Started with the Raspberry Pi FREE CHAPTER 2. Building Your Own Futuristic Robot 3. Building a Wall-E Robot 4. Building a Robotic Fish 5. Creating a Robotic Hand with the Raspberry Pi 6. A Self-Balancing Robot 7. Adding the Raspberry Pi to a Quadcopter

Controlling the DC motors


To control the DC motors from the Raspberry Pi, you'll first want to install the libraries. Here are the steps to do so:

  1. cd ~: Go to the home directory.

  2. git clone https://github.com/simonmonk/raspirobotboard3.git : This command will get the library.

  3. cd raspirobotboard3/python: Go to the directory that has the installed files.

  4. sudo python setup.py install: Install the Python library.

Once these are installed, you can write this simple program to make the wheels go forward:

#!/usr/bin/python 
from rrb3 import * 
import time 
rr = RRB3(11, 11) 
rr.set_motors(0.5, 0, 0.5, 0) 
time.sleep(1) 
rr.set_motors(0, 0, 0, 0) 

This should make the wheels go forward at half the speed. You can add a bit of code to check full speed and forward and backward:

#!/usr/bin/python 
from rrb3 import * 
import time 
rr = RRB3(11, 11) 
rr.set_motors(1, 0, 1, 0) 
time.sleep(1) 
rr.set_motors(0.5, 0, 0.5, 0) 
time.sleep(1)...
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