Book Image

Robot Operating System Cookbook

By : Kumar Bipin
Book Image

Robot Operating System Cookbook

By: Kumar Bipin

Overview of this book

This book will leverage the power of ROS with an introduction to its core and advanced concepts through exciting recipes. You will get acquainted with the use of different synchronous and asynchronous communication methods, including messages, services, and actions. You will learn how to use the various debugging and visualization tools used in development and how to interface sensors and actuators with the ROS framework. Firstly, you will get to grips with ROS simulation frameworks, such as Gazebo and RotorS for modeling and simulating any physical robot and virtual environment. You will also cover mobile robotics, micro-aerial vehicles, and robotic arms, which are the leading branches of robotic applications. Robot Operating System Cookbook will also guide you in the development of an autonomous navigation framework for both mobile robots and micro-aerial vehicles. Finally, you will explore ROS-Industrial, an open source project that extends the advanced capabilities of ROS software to manufacturing industries.
Table of Contents (12 chapters)

Understanding the parameter server and dynamic parameters

In the previous chapter, we learned that the parameter server is a part of the ROS Master and allows the ROS system to keep the data or configuration information that is to be stored in a central place. All nodes can access and modify these values.

We have experience with the rosparam tool so we can work with the parameter server. The parameters can be changed dynamically during the execution of the node that uses these parameters, using the dyamic_reconfigure package. In the next section, we will learn about the dynamic parameters utility in ROS in detail.

Getting ready

Generally, we program a node where we initialize the variables with data values that can only be...