Book Image

Effective Robotics Programming with ROS - Third Edition

By : Anil Mahtani, Luis Sánchez, Aaron Martinez, Enrique Fernandez Perdomo
Book Image

Effective Robotics Programming with ROS - Third Edition

By: Anil Mahtani, Luis Sánchez, Aaron Martinez, Enrique Fernandez Perdomo

Overview of this book

Building and programming a robot can be cumbersome and time-consuming, but not when you have the right collection of tools, libraries, and more importantly expert collaboration. ROS enables collaborative software development and offers an unmatched simulated environment that simplifies the entire robot building process. This book is packed with hands-on examples that will help you program your robot and give you complete solutions using open source ROS libraries and tools. It also shows you how to use virtual machines and Docker containers to simplify the installation of Ubuntu and the ROS framework, so you can start working in an isolated and control environment without changing your regular computer setup. It starts with the installation and basic concepts, then continues with more complex modules available in ROS such as sensors and actuators integration (drivers), navigation and mapping (so you can create an autonomous mobile robot), manipulation, Computer Vision, perception in 3D with PCL, and more. By the end of the book, you’ll be able to leverage all the ROS Kinetic features to build a fully fledged robot for all your needs.
Table of Contents (18 chapters)
Effective Robotics Programming with ROS Third Edition
About the Authors
About the Reviewer
Customer Feedback

My first PCL program

In this section, you will learn how to integrate PCL and ROS. Knowledge and understanding of how ROS packages are laid out and how to compile are required although the steps will be repeated for simplicity. The example used in this first PCL program has no use whatsoever other than serving as a valid ROS node, which will successfully compile.

The first step is to create the ROS package for this entire chapter in your workspace. This package will depend on the pcl_conversions, pcl_ros, pcl_msgs, and sensor_msgs packages:

$ catkin_create_pkg chapter10_tutorials pcl_conversions pcl_ros pcl_msgs sensor_msgs

The following step is to create the source directory in the package using the following commands:

$ rospack profile
$ roscd chapter10_tutorials
$ mkdir src

In this new source directory, you should create a file named pcl_sample.cpp with the following code, which creates a ROS node and publishes a point cloud with 100 elements. Again, what the code does should not really...