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ROS Robotics Projects

You're reading from ROS Robotics Projects Make your robots see, sense, and interact with cool and engaging projects with Robotic Operating System

Product type Paperback

Published in Mar 2017

Publisher Packt

ISBN-13 9781783554713

Length 452 pages

Edition 1st Edition

Languages

C++

Tools

ROS

Concepts

Robotics

Author (1):

Lentin Joseph

View More author details

Table of Contents (13) Chapters

Preface

1. Getting Started with ROS Robotics Application Development FREE CHAPTER

2. Face Detection and Tracking Using ROS, OpenCV and Dynamixel Servos

3. Building a Siri-Like Chatbot in ROS

4. Controlling Embedded Boards Using ROS

5. Teleoperate a Robot Using Hand Gestures

6. Object Detection and Recognition

7. Deep Learning Using ROS and TensorFlow

8. ROS on MATLAB and Android

9. Building an Autonomous Mobile Robot

10. Creating a Self-Driving Car Using ROS

11. Teleoperating a Robot Using a VR Headset and Leap Motion

12. Controlling Your Robots over the Web

Interfacing robot hardware with ROS

In this section, we will see how we can interface a robot's embedded controller with ROS. The embedded controller can send speed commands to the motors and obtain speed commands from robot controller nodes. The ROS robot controller nodes receive linear and angular Twist command from the ROS navigation stack. The Twist command will be subscribed to by the robot controller node and converted into equivalent motor velocity, that is Vl and Vr.

The robot controller nodes also receive encoder ticks from the embedded controller and calculate the distance traveled by each wheel. Let's take a look at the robot controller nodes.

The Chefbot robot controller nodes are placed in chefbot_bringup/scripts. You can check out each node; they're all written in Python.

launchpad_node.py: This is the ROS driver node for handling Launchpad boards. This node will receive serial data from Launchpad and also send data to the board. After running this node, we will...

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Authors (1)

Lentin Joseph

Lentin Joseph

Lentin Joseph is an author and robotics entrepreneur from India. He runs a robotics software company called Qbotics Labs in India. He has 7 years of experience in the robotics domain primarily in ROS, OpenCV, and PCL. He has authored four books in ROS, namely, Learning Robotics using Python, Mastering ROS for Robotics Programming, ROS Robotics Projects, and Robot Operating System for Absolute Beginners. He is currently pursuing his master's in Robotics from India and is also doing research at Robotics Institute, CMU, USA.

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