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Internet of Things Programming Projects

You're reading from   Internet of Things Programming Projects Build modern IoT solutions with the Raspberry Pi 3 and Python

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Product type Paperback
Published in Oct 2018
Publisher Packt
ISBN-13 9781789134803
Length 436 pages
Edition 1st Edition
Languages
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Author (1):
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Colin Dow Colin Dow
Author Profile Icon Colin Dow
Colin Dow
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Toc

Table of Contents (21) Chapters Close

Preface 1. Installing Raspbian on the Raspberry Pi FREE CHAPTER 2. Writing Python Programs Using Raspberry Pi 3. Using the GPIO to Connect to the Outside World 4. Subscribing to Web Services 5. Controlling a Servo with Python 6. Working with the Servo Control Code to Control an Analog Device 7. Setting Up a Raspberry Pi Web Server 8. Reading Raspberry Pi GPIO Sensor Data Using Python 9. Building a Home Security Dashboard 10. Publishing to Web Services 11. Creating a Doorbell Button Using Bluetooth 12. Enhancing Our IoT Doorbell 13. Introducing the Raspberry Pi Robot Car 14. Controlling the Robot Car Using Python 15. Connecting Sensory Inputs from the Robot Car to the Web 16. Controlling the Robot Car with Web Service Calls 17. Building the JavaScript Client 18. Putting It All Together 19. Assessments 20. Other Books You May Enjoy

Modifying the robot car Python code

Now that we have tested the motors, servos, camera, and LEDs, it's time to modify the code into classes to give it more unity. In this section, we will make T.A.R.A.S dance.

Move the wheels

Let's start by encapsulating the code that moves the wheels on the robot car:

  1. Open up Thonny from Application Menu | Programming | Thonny Python IDE
  2. Click on the New icon to create a new file
  3. Type the following code into the file:
from gpiozero import Robot
from time import sleep

class RobotWheels:

robot = Robot(left=(5, 6), right=(22, 27))

def __init__(self):
pass

def move_forward(self):
self.robot.forward(0.2)

def move_backwards(self):
self...
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