Book Image

ROS Robotics By Example

Book Image

ROS Robotics By Example

Overview of this book

The visionaries who created ROS developed a framework for robotics centered on the commonality of robotic systems and exploited this commonality in ROS to expedite the development of future robotic systems. From the fundamental concepts to advanced practical experience, this book will provide you with an incremental knowledge of the ROS framework, the backbone of the robotics evolution. ROS standardizes many layers of robotics functionality from low-level device drivers to process control to message passing to software package management. This book provides step-by-step examples of mobile, armed, and flying robots, describing the ROS implementation as the basic model for other robots of these types. By controlling these robots, whether in simulation or in reality, you will use ROS to drive, move, and fly robots using ROS control.
Table of Contents (17 chapters)
ROS Robotics By Example
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Chapter 9. Flying a Mission with Crazyflie

Robots are fun and sometimes frustrating to program. Quadrotors are particularly difficult to control due to the number of flight factors and the complexity of flight programs to control these factors. Quadrotors are currently being tested as surveillance cameras and delivery vehicles for packages and fast food. In this chapter, we will explore the subject of programming quadrotors to fly to specific destinations. This application may be handy for delivering coffee and paperwork around the office. We will begin by using a barebones quadrotor and an inexpensive depth camera to sense the quadrotor's location.

This chapter will highlight the use of ROS communication to coordinate the locations of the quadrotor and the target. A Kinect sensor will be used to visualize the environment and the position of the quadrotor in it to coordinate its landing at a marked location. ROS tf transforms and pose messages will be generated to identify the reference frames...