[ROS Q&A] 199 - How to Publish and Subscribe to a topic from a launch file

Learn how to publish and subscribe to a topic from a launch file.

This video is an answer to the following question found on ROS Answers: https://answers.ros.org/question/336388/rostopic-pub-and-echo-in-launch-file/

You'll learn:
* How to publish to a topic (rostopic pub) from a launch file.
* How to subscribe to a topic (rostopic echo) from a launch file.

RELATED ROS RESOURCES&LINKS:
ROS Development Studio (ROSDS) ---▸ http://rosds.online
Robot Ignite Academy --▸ https://www.robotigniteacademy.com

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