ROS2 Basics in 5 Days (Python)

Unit 3 Understanding ROS2 Topics

• Summary -

Estimated time to completion: 3 hours

What will you learn about in this unit?

• Topics

• Basic Topic commands

• Topic Publishers

• Topic Subscribers

• How to mix Publishers and Subscribers

• Custom interfaces

• End of Summary -

3.1 What is a Topic in ROS2?

I know you are eager to start playing with the simulation, but you must be clear on a few concepts before you begin. So let us start with Topics.

3.1.1 Basic Topic commands

Open your Shell #1 and run the commands to source it for working with ROS2.

Execute in Shell #1