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Mastering ROS for Robotics Programming

You're reading from   Mastering ROS for Robotics Programming Design, build, and simulate complex robots using the Robot Operating System

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Product type Paperback
Published in Dec 2015
Publisher Packt
ISBN-13 9781783551798
Length 480 pages
Edition 1st Edition
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Author (1):
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Lentin Joseph Lentin Joseph
Author Profile Icon Lentin Joseph
Lentin Joseph
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Table of Contents (14) Chapters Close

Preface 1. Introduction to ROS and Its Package Management FREE CHAPTER 2. Working with 3D Robot Modeling in ROS 3. Simulating Robots Using ROS and Gazebo 4. Using the ROS MoveIt! and Navigation Stack 5. Working with Pluginlib, Nodelets, and Gazebo Plugins 6. Writing ROS Controllers and Visualization Plugins 7. Interfacing I/O Boards, Sensors, and Actuators to ROS 8. Programming Vision Sensors using ROS, Open-CV, and PCL 9. Building and Interfacing Differential Drive Mobile Robot Hardware in ROS 10. Exploring the Advanced Capabilities of ROS-MoveIt! 11. ROS for Industrial Robots 12. Troubleshooting and Best Practices in ROS Index

Streaming webcam from Odroid using ROS


ROS system is designed mainly for distributive computing. We can write and run the ROS nodes on multiple machines and communicate each node to a single master. For communicating between two devices using ROS, we should follow the following rules:

  • Only single ROS master should run; we can decide which machine should run the master

  • All machines should be configured to use the same master URI through ROS_MASTER_URI

  • Bi-directional connectivity should be ensured between all the pairs of machines

  • Each machine should have a name that can be identified by the other machines

In this section, we will see how to run the ROS master in Odroid and stream the camera images to a PC. First, we will look at the setup required for the distributing computing between Odroid and PC.

Connect Odroid to the PC directly using the LAN cable and create a Ethernet hotspot, as we mentioned in the previous chapter. Find the IPs of Odroid and the PC and set the following lines of command...

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