Ros2 Basics in 5 Days - Action quiz - Topics thought

In Action quiz, we ask to publish data to /total_distance topic. This topic doesn’t exist. Should I build it?
How do I build a new topic? Till now we used some known topic like “/cmd_vel”.



Unit 3 explains how you can create a topic with a publisher. You can create it and make it publish the total distance (remember to specify the correct message type)

In unit 3 we created a publisher node that publish to /cmd_vel topic.
Also we created a subscriber node that subscribed to /scan topic.
But I can’t find where we learned how to create a new topic as cmd_vel or scan.

You can create a new topic by creating a publisher for it, just like you did for cmd_vel. You have to change the type as well.

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