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Thank you Serafadam. I believe that your question has led me to the answer. When I run ros2 doctor I get:

/opt/ros/foxy/lib/python3.8/site-packages/ros2doctor/api/topic.py: 56: UserWarning: Subscriber without publisher detected on /remote_computer/joy.
/opt/ros/foxy/lib/python3.8/site-packages/ros2doctor/api/topic.py: 56: UserWarning: Subscriber without publisher detected on /remote_computer_python/rplidarScan.

Apparently part of running a node from a launch file is that my noded now expect the topics to which they subscribe to also be different. I didn't expect that. This would explain it. Also, the launch file on the robot has a different namespace than on my computer and I haven't figured out how to run teleop_joy_twist from my launch file yet so in aggregate, that is why nothing is working!

Thanks for cluing me in. I think that this should be relatively easy to fix now.

Thank you Serafadam. I believe that your question has led me to the answer. When I run ros2 doctor I get:

/opt/ros/foxy/lib/python3.8/site-packages/ros2doctor/api/topic.py: 56: UserWarning: Subscriber without publisher detected on /remote_computer/joy.
/opt/ros/foxy/lib/python3.8/site-packages/ros2doctor/api/topic.py: 56: UserWarning: Subscriber without publisher detected on /remote_computer_python/rplidarScan.

Apparently part of running a node from a launch file is that my noded node now expect the topics to which they subscribe to also be different. I didn't expect that. This would explain it. Also, the launch file on the robot has a different namespace than on my computer and I haven't figured out how to run teleop_joy_twist from my launch file yet so in aggregate, that is why nothing is working!

Thanks for cluing me in. I think that this should be relatively easy to fix now. now.