Questions tagged [node]
The node tag has no summary.
242 questions
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Nodes randomly Vanishing
I'm working with a multi-robot (AGVs) system where a agv_node is running inside each bot. They all are on same network but I'm facing a very critical and weird issue that is, Suppose I started the ...
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Kill/Handle ros2 nodes that where started from within a Jupyter notebook
I am working with Jupyter notebook to presents some ROS2 Humble fundamentals, including simple nodes that I run from within a notebook. The nodes itself run fine, but stopping the cell inside the ...
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Some nodes fail to start when using a unified launch file
[ROS 2 Humble] Some nodes fail to start when using a unified launch file
Hello,
I'm currently working in a ROS 2 Humble environment. Each package runs fine individually using its own launch file.
...
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What are the benefits for creating a global node instead of communicating between nodes?
I'm working on implementing imitation learning in ROS2, and I need to write some data collection code.
I came across an interesting implementation by Trossen Robotics for ALOHA2, but their code ...
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43
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TurtleBot4 ROS2 Humble Nodes launched via systemd do not appear in ros2 node list
As the title states I am trying to run two nodes from this systemd file:
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gazebo sensor example does not work for me
I am trying to learn gazebo and i am now in the sensors page(that is here:https://gazebosim.org/docs/latest/sensors/ ) but when i am trying the lidar_node:
/*
...
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67
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ROS 2 Humble Nodes and Topics Don't Show Up in Docker with QEMU on Jetson Orin
I’m running into an issue with ROS 2 Humble nodes and topics not appearing in a Docker container.
Here’s my setup:
Device: Jetson Orin AGX 64GB (arm64)
Docker image: ros:humble (amd64)
Using qemu-...
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96
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How to suppress 'process started with pid' message
When I start a node in my ros2 launch file, I get the following info message:
[INFO] [mynode]: process started with pid [779797]
although I have set my default log-level for the node to ERROR.
Where ...
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1
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952
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Actual good way to close nodes
I was checking the code from example packages, such as demo_nodes_py and found out that there were no destroy_node() or ...
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ROS2 Humble Nodes and Topics Don't Show Up
When running nodes in ROS 2, the nodes and the topics that they publish or subscribe to do not appear when ros2 node list and ...
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ROS2 Jazzy, How to change publisher nodes from a package
I have just followed the steps in https://docs.ros.org/en/jazzy/Tutorials/Beginner-Client-Libraries/Writing-A-Simple-Py-Publisher-And-Subscriber.html, and I would like to change the .py script so that ...
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ROS2 colcon build outputs "Summary: 0 packages finished"
I am creating a workspace with colcon. I create a folder src/ in the folder I want to create the workspace, create a talker node in src/, and then from root I execute "colcon build".
However,...
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How to go about rewriting Node to Hardware Component for ros2_control
I'm currently in the process of rewriting this driver for the Ublox ZedF9P GPS to integrate it into the ros2_control architecture. However, I'm facing challenges ...
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2
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259
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ros2 parameter dynamic update and node restart
I'm wondering what design pattern, if any, should be followed for a ros2 node that restarts after a dynamic parameter update. The use case is the following:
ros2 node starts and reads parameters from ...
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182
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rqt_graph sees more nodes and topics than ros2 topic list and ros2 node list
I'm migrating a ROS1 application to ROS2 and am at the stage where I have some nodes converted and running. The main workhorse node, though, runs fine (as in not crashing) but it doesn't show up when ...
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