No ROS2 Publish Clock Node

Omniverse Isaac Sim
1

Isaac Sim Version

4.5.0

Operating System

Ubuntu 22.04

The Isaac Sim 4.5.0 ROS2 Clock tutorials mention a ROS2 Publish Clock node, but that node is not available/listed in Isaac Sim 4.5.0 ActionGraph.Nodes list.

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Is this a known bug or is there a way to import additional library OmniGraph nodes?

2

“ROS2 Publish Clock” is available in Window->Graph Editors->Action Graph on my system. Did you enable the ROS Bridge Extension as described in ROS and ROS 2 Installation — Isaac Sim Documentation?

3

Yes, the ROS Bridge Extension is enabled, and I can see other ROS nodes. I completely uninstalled 4.0.0 according to the published documentation and then installed 4.5.0, and the Isaac Sim window shows 4.5.0.

4

Could you provide a full log?

5

What would you like logs of? I upgraded to 4.5.0 months ago. I can provide the isaac sim startup logs

6

That will be good.

7

isaac-sim.sh_logs.txt (47.2 KB)
Thank you for looking into this, please let me know if there are any additional logs you’d like to see.

8

I didn’t find this message in your log file:

2025-04-23 05:37:39 [11,949ms] [Info] [omni.ext.plugin] [ext: isaacsim.ros2.bridge-4.1.15] started, startup time: 198 (ms)

You may need to carefully follow the instructures in ROS and ROS 2 Installation — Isaac Sim Documentation to ensure everything is set up properly.

9

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