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ROS 2 from Scratch

You're reading from   ROS 2 from Scratch Get started with ROS 2 and create robotics applications with Python and C++

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Product type Paperback
Published in Nov 2024
Publisher Packt
ISBN-13 9781835881408
Length 380 pages
Edition 1st Edition
Concepts
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Author (1):
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Edouard Renard Edouard Renard
Author Profile Icon Edouard Renard
Edouard Renard
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Table of Contents (20) Chapters Close

Preface 1. Part 1:Getting Started with ROS 2
2. Chapter 1: Introduction to ROS 2 – What Is ROS 2? FREE CHAPTER 3. Chapter 2: Installing and Setting Up ROS 2 4. Chapter 3: Uncovering ROS 2 Core Concepts 5. Part 2: Developing with ROS 2 – Python and C++
6. Chapter 4: Writing and Building a ROS 2 Node 7. Chapter 5: Topics – Sending and Receiving Messages between Nodes 8. Chapter 6: Services – Client/Server Interaction between Nodes 9. Chapter 7: Actions – When Services Are Not Enough 10. Chapter 8: Parameters – Making Nodes More Dynamic 11. Chapter 9: Launch Files – Starting All Your Nodes at Once 12. Part 3: Creating and Simulating a Custom Robot with ROS 2
13. Chapter 10: Discovering TFs with RViz 14. Chapter 11: Creating a URDF for a Robot 15. Chapter 12: Publishing TFs and Packaging the URDF 16. Chapter 13: Simulating a Robot in Gazebo 17. Chapter 14: Going Further – What To Do Next 18. Index 19. Other Books You May Enjoy

Node template for Python and C++ nodes

All the nodes we start in this book will follow the same structure. As additional help to get started quickly, I have created a node template you can use to write the base of any Python or C++ node. I use these templates myself when creating new nodes, as the code can be quite repetitive.

You can copy and paste the templates either from this book directly, or download them from the GitHub repository: https://github.com/PacktPublishing/ROS-2-from-Scratch.

Template for a Python node

Use this code to start any new Python node:

#!/usr/bin/env python3
import rclpy
from rclpy.node import Node
class MyCustomNode(Node): # MODIFY NAME
    def __init__(self):
        super().__init__("node_name") # MODIFY NAME
def main(args=None):
    rclpy.init(args=args)
    node = MyCustomNode() # MODIFY NAME
    rclpy.spin(node...
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