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2021-02-24 15:15:07 -0500 | asked a question | robot_localization drift when using simulated roll and pitch robot_localization drift when using simulated roll and pitch I am seeing a large drift in the position output (from loca |
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2019-03-05 14:57:25 -0500 | marked best answer | Error when creating snaps for ros subscriber/publisher tutorial I am very new to snaps. I am following this tutorial to get started with ros and snaps. I was successful in creating the ros-base snap that contains roscore and the basic ros packages. When I try creating a snap for ros-app, I get an error
The problem I guess is that, it is looking the sub-directory src/src instread of just src/. Do I need to edit the snapcraft.yaml file to change some paths? |
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2018-04-15 12:49:11 -0500 | marked best answer | Ros python packages __init__ level imports I noticed that in native ROS packages all available modules seem to be imported at package level always. For example let us consider the However the In order to verify if this is something done by the catkin build system, I wrote my own ros python package. My custom package did't any modules imported at package level. So my question is what makes the ROS native python packages special to cause this behavior? In order to understand this question better, if you want to access the rosbag source, see the link https://github.com/ros/ros_comm/tree/... |
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2018-04-12 08:22:32 -0500 | edited question | Ros python packages __init__ level imports Ros python packages __init__ level imports I noticed that in native ROS packages all available modules seem to be import |
2018-04-11 22:46:50 -0500 | asked a question | Ros python packages __init__ level imports Ros python packages __init__ level imports I noticed that in native ROS packages all available modules seem to be import |
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2017-09-08 10:59:59 -0500 | marked best answer | Rosdep not finding packages that are in index.yaml I am have ros-kinetic installed in Ubuntu 16.04. I cloned a couple of packages into my workspace and ran rosdep to get their dependencies. I ran rosdep from the root of my workspace using this line Rosdep returns with a bunch of missing pacakages. The missing packages in my case are listed below. Most of these packages are found in the ros distro index file. I am able to install them manually using apt-get. Why is rosdep failing to find them? |
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2017-08-24 12:02:04 -0500 | answered a question | Rosdep not finding packages that are in index.yaml In case some package is mispelled or if there is some other reason preventing rosdep from installing some package. That |
2017-08-24 12:00:20 -0500 | commented question | Rosdep not finding packages that are in index.yaml That was the problem. I had misspelled a different package that prevented rosdep from continuing and installing more stu |
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2017-08-23 18:19:55 -0500 | edited question | Rosdep not finding packages that are in index.yaml Rosdep not finding packages that are in index.yaml I am have ros-kinetic installed in Ubuntu 16.04. I cloned a couple of |
2017-08-23 18:17:48 -0500 | asked a question | Rosdep not finding packages that are in index.yaml Rosdep not finding packages that are in index.yaml I am have ros-kinetic installed in Ubuntu 16.04. I cloned a couple of |
2017-05-04 08:23:04 -0500 | commented answer | Error when creating snaps for ros subscriber/publisher tutorial I will try again and let you know. |
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2017-05-01 09:29:02 -0500 | commented question | Error when creating snaps for ros subscriber/publisher tutorial Snapcraft version: 2.29 |
2017-04-28 11:26:37 -0500 | asked a question | Error when creating snaps for ros subscriber/publisher tutorial Error when creating snaps for ros subscriber/publisher tutorial I am very new to snaps. I am following this tutorial to |
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2016-09-28 12:54:40 -0500 | asked a question | Bringing up a node through roslaunch from a remote machine and through local roslaunch gives different publishing rates I have two machines A and B. I want to start node N on machine B. Node N publishes topic T. case 1: Use launch file in machine A to remotely launch node N on machine B. case 2: Ssh in to machine B and launch node N on machine B locally. I assumed both these cases were identical with regards to the ROS system. However I am seeing significant differences and I would like some help understanding them. When I do a rostopic hz on topic T, I see different results between case 1 and case 2 I understand that small variations between rostopic hz numbers between machines A and B could be due to my network loads. I don't understand the big drop in hz values between case 1 and case 2. Any help would be great. Thanks. |
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2014-11-05 11:36:24 -0500 | commented answer | Arduino mega and rosserial problem I didn't know about this. I will try limiting my string usage and see if I can get through it. |
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2014-10-29 19:48:57 -0500 | asked a question | Arduino mega and rosserial problem I am using the arduino mega pro board https://www.sparkfun.com/products/10743 I have tested this board using stand alone sketches without ros and have no issues with that. Any sketch below 30kb works with rosserial and arduino mega pro smoothly. As soon as my sketch size increases beyond 30kb, I start getting the error: Unable to sync with device; possible link problem or link software version mismatch such as hydro rosserial_python with groovy Arduino If I comment some functions in my sketch to bring the size below 30kb, things are working again. One reason why I am using this board over arduino uno is that arduino mega lets me upload sketches over 32k (which is the maximum sketch size for arduino uno). Any idea why this is happening? Does ros think that my mega pro board has a memory of 32k and failing when the sketch size goes beyond that. Any help would be appreciated. Thanks. |
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2013-05-28 05:48:19 -0500 | commented answer | Error building cv_bridge on RaspberryPi I am also having error with installing cv_bridge on raspbian. About installing opencv from source, are you referring to vision_opencv that comes with ros or the opencv from debian repositories? |
2013-05-28 05:47:12 -0500 | answered a question | Error building cv_bridge on RaspberryPi I am also having error with installing cv_bridge on raspbian. About installing opencv from source, are you referring to vision_opencv that comes with ros or the opencv from debian repositories? |
2012-08-30 13:01:52 -0500 | answered a question | problem using Turtlebot Interactive Markers Hey Barriere, Were you able to figure this out. I am getting the same issue. I tried "rostopic echo /cmd_vel", it give me correct values corresponding to motion. But the robot doesn't move. The circle is blue not green like you mentioned. Thanks |