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ROS 2 Dashing Topics Not Received on Remote PC

asked 2020-09-03 16:34:00 -0500

jbot2020 gravatar image

Hi there, I have installed ROS2 Dashing on a Ubuntu 18.04 laptop (remote pc), and ROS2 Dashing on a Turtlebot3 Waffle Pi with Ubuntu Server 18.04. When running the bringup instructions ( there are no errors, and the all needed functionality of ROS2 works on the Waffle Pi. However, it appears that messages / topics / data are not being transmitted to the remote pc.

When I run ros2 topic list I see all the topics on the waffle pi, but only the default two on the remote pc. the ROS_DOMAIN_ID is set to 30 on both devices. I am successfully connected via ssh on a static ip.

If anyone has any insight on why messages / topics are not coming through, I would really appreciate it.

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Any Solutions found ?.... I am having the same issue with the ROSBOT.

Jarvis19 gravatar image Jarvis19  ( 2020-10-02 05:35:41 -0500 )edit

Hi any solution found?? Also did you try ROS1 Kinetic on waffle pi with Ubuntu server 18.04 on PC? I am having connection lost between both after few seconds. Any recommendations on the combination of selection of OS on waffle pi and PC. Many thanks

syed yunas gravatar image syed yunas  ( 2021-04-25 23:01:21 -0500 )edit

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answered 2021-04-26 09:40:32 -0500

jbot2020 gravatar image

Hey again, sorry for the nonresponse but I did actually find the issue.

The issue was a firewall issue. Unfortunately I do not know the exact rule that was causing the issue but to test I temporarily disabled the firewall on the robot and on the laptop and it started working.

This can be done with the command sudo ufw disable But of course this isn't a great long term solution for obvious reasons, if you have time to add rules back in until you hit the one that breaks it that would be best.


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Asked: 2020-09-03 16:34:00 -0500

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Last updated: Sep 03 '20