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/tf suddenly missing

asked 2022-03-27 03:53:45 -0600

Kevin1719
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Hi, I'm using a robot run with Raspberry Pi 3, and I'm controlling it from my computer using ROS_MASTER_URI. As usual, after loading my robot_description parameter and run robot_state_publisher node, I can view my robot in Rviz from /tf, but suddenly, when I re-run the process, Rviz said "no tf data", although the topic /tf still exist and there still have the robot_description parameter. What could be the problem? I have struggled with this for days.

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Did you restart the ros-master (roscore)? All ros nodes must be restarted if the ros-master restarts, including rviz.

Mike Scheutzow ( 2022-03-27 08:50:50 -0600 )edit

Thanks Mike for your reply, good to see you. I figured out the problem and will post the answer.

Kevin1719 ( 2022-03-27 09:58:19 -0600 )edit

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answered 2022-03-27 10:01:27 -0600

Kevin1719
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After a while, I found the solution. When I echo the /tf topic in my computer's terminal, nothing is displayed, but when I did that in the Pi3's terminal, those data appeared. Then I think it may be the connection problem. I realized that there were many devices using the Wifi, so I turn off some of them and restart the machine, then everything back to normal.

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Asked: 2022-03-27 03:53:45 -0600

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Last updated: Mar 27 '22

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