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2022-05-17 01:36:26 -0500 | marked best answer | Did ros-galactic-example-interfaces break? It seems like a new version of ros-galactic-example-interfaces was released today, version 0.9.2-2focal.20220430.122855, or possibly/likely one of its dependencies. And suddenly, my example code in a container (which fetches example-interfaces via rosdep install), no longer works. It produces the following error when I attempt to run it: I'm not sure whom I should inform. I see that a container built from the same Dockerfile a few days ago has version 0.9.2-2focal.20220210.222214 of ros-galactic-example-interfaces and that has been working fine for me all week. --wpd |
2022-05-16 13:27:40 -0500 | answered a question | Did ros-galactic-example-interfaces break? Add apt update && apt upgrade -y to the Dockerfile. I was certain that my Dockerfile had an apt update -y comma |
2022-05-09 09:05:57 -0500 | commented question | Did ros-galactic-example-interfaces break? Rebuilding doesn't work for me... at least, rebuilding the docker container that pulls in the prebuilt Ubuntu .deb files |
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2022-05-06 15:17:39 -0500 | asked a question | Did ros-galactic-example-interfaces break? Did ros-galactic-example-interfaces break? It seems like a new version of ros-galactic-example-interfaces was released |
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2021-06-24 14:21:18 -0500 | commented answer | How to build and include a 3rd party library in a ROS2 package? Blech... I spoke/wrote too soon. Any thoughts on how to integrate a 3rd party package that names itself sdbus-c++ in th |
2021-06-24 13:56:11 -0500 | edited answer | How to build and include a 3rd party library in a ROS2 package? @flimsypondreed answered this in his comment above: If you create a ament-cmake package using the ros2 pkg create |
2021-06-24 13:42:17 -0500 | answered a question | How to build and include a 3rd party library in a ROS2 package? @flimsypondreed answered this in his comment above: If you create a ament-cmake package using the ros2 pkg create |
2021-06-24 13:42:17 -0500 | received badge | ● Rapid Responder (source) |
2021-06-23 20:15:56 -0500 | edited question | How to build and include a 3rd party library in a ROS2 package? How to build and include a 3rd party library in a ROS2 package? I have source code for a library (and test application) |
2021-06-23 19:23:02 -0500 | asked a question | How to build and include a 3rd party library in a ROS2 package? How to build and include a 3rd party library in a ROS2 package? I have source code for a library (and test application) |
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2020-06-03 13:28:05 -0500 | commented answer | Is there a REP or standard for the /cmd_vel topic? Given that my original question was a thinly veiled version of "I think I recall reading REP-119 once (perhaps 11 years |
2020-06-03 07:59:28 -0500 | marked best answer | Is there a REP or standard for the /cmd_vel topic? Is there anything that says "Thou shalt only use geometry_msgs/Twist on the /cmd_vel topic"? Is there anything that says how a robot might indicate, "I have 2 wheels and can only move in the X direction or rotate about the Z axis"? What should a robot do if it is commanded to move in the Y or Z axis and it is not capable of doing so? Should it halt and catch fire? Should it silently ignore such commands? Oh yeah, how about some way to indicate "If you ask me to go 3e8 m/s, I'm not going to be able to achieve that. The best I can do is 1e-2 m/s, and that's only on a good day". I feel like I read a REP about this once before, but all I'm seeing today is REP-103. Thanks. --wpd |
2020-06-03 07:38:23 -0500 | commented answer | Is there a REP or standard for the /cmd_vel topic? Thanks. I missed REP-119. I am aware that there are "general conventions" about this, but thought it would make sense |
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2020-06-02 14:27:00 -0500 | asked a question | Is there a REP or standard for the /cmd_vel topic? Is there a REP or standard for the /cmd_vel topic? Is there anything that says "Thou shalt only use geometry_msgs/Twist |
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2020-01-08 13:03:37 -0500 | marked best answer | How to migrate a catkin workspace? I just upgraded my VM from Ubuntu 12.04 to 14.04, and my ROS installation from Hydro to Indigo. Now that I've done that, I wonder if there is anything special I need to do to migrate my catkin workspace (which was created initially with Hydro) to Indigo. I just tried the obvious (I guess I could have tried this _before_ I asked my question, but the end result was about what I expected): |
2019-09-01 07:48:19 -0500 | commented question | ros-melodic installation on ubuntu-16.04 Hello @gvdhoorn, Thank you for the suggestion. Not knowing about the --skip-keys option, I instead went down the path o |
2019-08-31 18:53:52 -0500 | commented question | ros-melodic installation on ubuntu-16.04 This is funny. I am trying to do the same thing, 2 days after the OP (build melodic on a 16.04 machine). But it seems |
2019-08-31 18:53:00 -0500 | commented question | ros-melodic installation on ubuntu-16.04 This is funny. I am trying to do the same thing, 2 days after the OP (build melodic on a 16.04 machine). But it seems |
2018-07-18 19:20:36 -0500 | marked best answer | How can I reference an external project with Catkin? I would like to build a ROS node that uses some code from an external project. I certainly need to reference some header files from that project, and will probably also need to "pull in" some C++ source code from that project. The simplest, dumbest, least maintainable way I could to this would be to simply copy the header file(s) and source file(s) into my ROS project. I feel like there should be some way to tell Catkin or Cmake "Add this directory to the list of includes" and "Add that directory to VPATH". But, as Catkin and Cmake are totally new to me (as of about a week ago), I haven't the foggiest idea how to ask the Google to find the answer to my question. So I'll ask the community instead :-) Thanks for any tips you can give me. |
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2017-03-27 09:23:41 -0500 | marked best answer | Why can the odom frame drift? According to REP 105, "The pose of a mobile platform in the odom frame can drift over time". I am trying understand what that means. In what situations would the frame "drift"? And "drift" relative to what? The base_link? How would the the odom frame drift relative to the base link if the robot is responsible for publishing the base_link->odom transform based on it's notion of odometry in the first place? REP 105 also states/requires, "the pose of a robot in the odom frame is guaranteed to be continuous". Does this mean I can't use an INDEX pulse on my wheel encoders to reset the axel angle to zero on each wheel rotation, since that might lead to a discontinuity? Or does it imply a requirement that I must filter my odometry estimates to eliminate such discontinuities. Hmmm... maybe this starts to make sense. If I'm required (by REP 105) to eliminate any discontinuities, I can see where that might lead to "drift"...maybe. Anyways, I'm confused, and would appreciate any enlightenment folks would care to give me on this topic. --wpd |
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