9 - Understanding ROS Actions - Servers, ROS in 5 Days query

Course Support ROS Basics In 5 Days (Python)
1

Hi RobotIgnite Support Community,

I’m trying to run this code in the note book, Python Program {4.11a}: fibonacci_action_server.py

I clicked on the play button on the top right corner of the notebook and nothing happens,

and there are no results after I clicked on the play button,

user:~$ rostopic echo /fibonacci_as/result
WARNING: no messages received and simulated time is active.
Is /clock being published?

image
image1831×829 312 KB

Please advise on what I can do, I even tried manually executing the python code in the console,
still it does not run,

Thank you,

Kind Regards,
Roger

2

Hi @wai.mak,
Did you read on? The code only starts the server, you have to send a request to the server to receive a result. Keep on reading in the notebook, it tells you to execute two more commands in shell #2 and #3. An action server is not a constant publisher. It only does something when receiving a goal

1 Like
3

Hi @simon.steinmann91,

Ok I get you,

Thanks for the help
@wai.mak

1 Like