If you read this, well, you’ve already made huge progress! The hardest is behind, now just a few more things and you’ll be ready to write your own complete ROS 2 application.

In this quick section we’ll focus on ROS 2 parameters.

Parameters will allow you to provide run-time settings for your nodes.

At the end of this section you will know:

• What ROS2 parameters are and when to use them.

• How to declare and get parameters for your nodes.

• How to store your parameters inside a YAML file

• Bonus: parameter callbacks