Book Image

ROS Programming: Building Powerful Robots

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

ROS Programming: Building Powerful Robots

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

Overview of this book

This learning path is designed to help you program and build your robots using open source ROS libraries and tools. We start with the installation and basic concepts, then continue with the more complex modules available in ROS, such as sensor and actuator integration (drivers), navigation and mapping (so you can create an autonomous mobile robot), manipulation, computer vision, perception in 3D with PCL, and more. We then discuss advanced concepts in robotics and how to program using ROS. You'll get a deep overview of the ROS framework, which will give you a clear idea of how ROS really works. During the course of the book, you will learn how to build models of complex robots, and simulate and interface the robot using the ROS MoveIt motion planning library and ROS navigation stacks. We'll go through great projects such as building a self-driving car, an autonomous mobile robot, and image recognition using deep learning and ROS. You can find beginner, intermediate, and expert ROS robotics applications inside! It includes content from the following Packt products: ? Effective Robotics Programming with ROS - Third Edition ? Mastering ROS for Robotics Programming ? ROS Robotics Projects
Table of Contents (37 chapters)
Title page
Copyright and Credits
Packt Upsell
Preface
Bibliography
Index

ROS-Industrial robot client package


The industrial robot client nodes are responsible for sending robot position/trajectory data from ROS MoveIt! to the industrial robot controller. The industrial robot client converts the trajectory data to simple_message and communicates to the robot controller using the simple_message protocol. The industrial robot controller running a server and industrial robot client nodes are connecting to this server and start communicating with this server.

Designing industrial robot client nodes

The industrial_robot_client package contains various classes to implement industrial robot client nodes. The main functionalities that a client should have is, it can update the robot current state from the robot controller, and also it can send joint trajectories/joint position message to the controller.

There are two main nodes that are responsible for getting robot state and sending joint trajectory/position values.

  • The robot_state node: This node is responsible for publishing...