2022年9月16日 · Also, it does seem a little risky to destroy a node from within the node, but I don't really know. Asked by Morris on 2022-09-15 12:43:11 UTC I am also using ROS Foxy but in Ubuntu 20.04 LTS.

2021年1月15日 · When ever I launch my Node B it come and stops at the read() and doesn't proceed even though it is in a While loop. I even tried sending the sockfd via a ROS service from Node A (Service - Client) to Node B (Service - Server) and receiving the actual value of the sockfd but still not able to read the data via Node B. Kindly suggest a solution ...

2020年5月22日 · Start a ros node that uses python 2.7 an image_publisher for example; Start another ros node that uses python 3.7 an image_subscriber and processor for example that uses opencv (which requires a python 3 dependency, which is …

2020年9月15日 · @ajpaezm Is your node a python script? If that is the case you will need to give executable permissions to the file with: sudo chmod +x my_node.py. On the other hand ensure that you have sourced properly you ROS environment and Catkin workspace.

2020年10月16日 · A possible solution when launching a node from the command line, is to redirect the output (find a brief introduction to the topic and a useful cheat-sheet here) of the node by using. rosrun package_name node_name 2>&- With this, one can run the node and see the [INFO] messages, while muting the unwanted warnings/errors.

2021年10月20日 · Moreover, when the cable is reconnected, the node detects the stopping condition and shuts down. This is just speculation, but my gut feeling is that when the connection is severed, the remote node is getting paused and never reaching the connection checking code. When the connection is restored, the node unpauses and retroactively hits the check.

ROS Docker node can't publish to ROS master Hello Guys, I am currently trying to control a robot using a ROS node in a Wsl Docker container. The workflow set-up is a local network consisting of a ROS master pc, the robot and my container.

2020年7月1日 · Running ROS nodes as root is really not a good idea, but try with sudo -E as a launch-prefix. That should prevent sudo from sanatising the environment. Whether it leaves LD_LIBRARY_PATH alone I'm not sure. It could be that Focal comes with security related changes which make even sudo -E not work.

2021年6月4日 · Warnings are things that may be just fine, but are sometimes at fault WARNING The following node subscriptions are unconnected: * /move_base: * /move_base/cancel * /gazebo: * /gazebo/set_link_state * /gazebo/set_model_state * /rviz: * /scan * /map_updates WARNING These nodes have died: * urdf_spawner-4 Found 1 error(s).

2020年2月10日 · Here, I'm trying to effectively catch an unexpected crash of a node in two ways: through the 'node2' process onexit attribute; through the ProcessExit event handler; However, it appears my nodes raising exceptions does not initiate a shut down, and instead, after raising an exception I only receive a log like such: