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2016-09-17 07:36:53 -0500 | asked a question | odometry arrow shifted in rviz Hello, I am trying to setup gmapping and I have issues with the map being generated incorrectly. It looks like I have issues in the localization process because of odometry or because of the imu. So I started by looking at the odometry, and I noticed that when I move the robot the odometry arrow is not placed corectly near the base link. Here is a video that shows the problem : https://www.dropbox.com/s/apm5jbxregg... If anybody could help me to determine what's happening, that would be great :) Also, I never used an IMU, so I don't know if the pink arrow is acting as it should be, so I am taking any advice on this topic too. |
2016-05-10 06:06:51 -0500 | received badge | ● Famous Question (source) |
2016-03-14 19:14:42 -0500 | commented question | Gazebo ros control plugin not loading on OSX I have completed the log with the -v option for roslaunch AND with verbose:=true. |
2016-03-14 13:56:01 -0500 | received badge | ● Notable Question (source) |
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2016-03-14 12:59:17 -0500 | commented question | Gazebo ros control plugin not loading on OSX Is there any flag, arg or env var that I can add to get a more verbose output ? |
2016-03-14 11:46:35 -0500 | received badge | ● Popular Question (source) |
2016-03-13 08:24:12 -0500 | asked a question | Gazebo ros control plugin not loading on OSX I am trying to simulate my robot with gazebo, and I am getting the following warning "Controller Spawner couldn't find the expected controller_manager ROS interface.". After looking to other answers, I assume that it is related to the gazebo gazebo_ros_control plugin which is not being loaded appropriatelly. I checked if the controller_manager was running with that command But I did not get any result. The only services listed with a name containing "controller" are the "/controller_spawner/get_loggers" and "/controller_spawner/set_logger_level" (and they are available until that warning message is displayed). My URDF file contains this : And since I am on OSX, I had to clone the gazebo_ros_pkgs repository in my catkin workspace, and I built it myself (using catkin_make). I noticed that the built files are .dylib files instead of .so, but replacing .so by .dylib in the "filename" attribute value of the URDF file does not solve the issue. I have seen a related issue on the gazebo bitbucket repo but since all the other gazebo libraries I have built are .dylib, I think that the gazebo version I use, already embed their fix (else I would have crashed sooner ?) So here is the full log following my roslaunch command, I'm open to any idea that can solve this problem :) (more) |
2016-03-08 09:33:34 -0500 | commented answer | URDF origins tags Since an URDF with a single link also displays axis, I assume that an implicit joint is created for the first link in an URDF right ? And if i'm right, this joint between that URDF link and an hardcoded link created/hardcoded somewhere by the ROS system ? |
2016-03-03 16:47:25 -0500 | received badge | ● Notable Question (source) |
2016-03-03 10:43:36 -0500 | commented answer | URDF origins tags If I understood correctly what you are saying at 17:30, using only the origin of the joint tag is not a problem for fixed joints right ? Also, in rviz, when you show the axis, which axis does it shows, the joint one ? |
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2016-03-03 05:38:14 -0500 | asked a question | URDF origins tags I'm building my first urdf, and I noticed that I can define the origin tag on the visual, collision elements but also on the link element. So I am wondering if there's a best practice ? For instance, if I have two 10cm x 10cm x 10cm boxes one on the other, I could define the origin on the link tag with y = 5cm and the origin of the visual/collision tags at y = 5cm too but this is not really DRY, so I would probably only use the origin of the link tag only with y = 10cm, but which solution is better ? |
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2016-01-22 04:01:38 -0500 | commented answer | Retrieve catkin build artificat path catkin_find --lib --first-only seems to be what I was looking for, even if I have to source my workspace setup.bash from my Makefile first :( One more question, my devel/ folder contains the "lib" directory, but no "include" directory, any idea of why my library .h are not being copied ? |
2016-01-21 11:03:36 -0500 | asked a question | Retrieve catkin build artificat path Hello, I'm building my first C++ ROS static library using Catkin, and I would like to link that library into an existing application which is being built with a Makefile. So I would like to know if there is a way to use a ROS or Catkin command to retrieve the path of the built library and so I will not have to hardcode the path of the library in the -L flag. |
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2015-04-17 03:25:40 -0500 | asked a question | Most popular packages/stacks Hello, I discovered the MoveIt and navigation packages that are really awesome, and I would like to know if there's a listing somewhere with the other packages that are as huge. I know there's a wiki page with ALL the packages/metapackages/stacks, but the list is really huge and there are a lot of small packages, so if anybody has a list containing the ones that should not be missed, it would be really helpful for beginners like me :) |