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2013-07-15 18:54:41 -0600 received badge  Famous Question (source)
2013-06-26 10:13:00 -0600 commented question multiple turtlebots on wireless network

Thanks Andrew, I have a question setup regarding how to do that single ros master multi-robot config. I would be very grateful if you could please take a look at it and give me an idea of how you got this to work. I tried it with namespaces following a suggestion here but it has been a dead end.

2013-06-24 12:10:08 -0600 commented question multiple turtlebots on wireless network

Hi, how are they running in the same network? Are they running independently or they can share topics?

2013-06-14 05:50:50 -0600 commented question ROS Groovy Update

I see, then maybe it is the same problem I had. Run the minimal launch, in another window run: rqt -s kobuki_dashboard then run: roslaunch turtlebot_bringup 3dsensor.launch . There should be some red alerts in the dashboard, copy and paste them in your question

2013-06-14 05:07:13 -0600 commented question ROS Groovy Update

Then is a different problem than I had. It might help others looking at your question if you post the errors that you are getting. You can normally see the descriptions of the errors in the dashboard.

2013-06-14 04:48:26 -0600 commented question ROS Groovy Update

I see, in my case it was the kinect driver. Can you see the pointcloud in rviz?

2013-06-14 04:33:37 -0600 received badge  Notable Question (source)
2013-06-14 04:32:25 -0600 commented question ROS Groovy Update

Hi, A. I had a similar experience, what errors are you getting?

2013-06-13 07:29:11 -0600 commented answer Multirobot with one master using different namespaces

Hi Martin, thanks again for your answer. The only difference is related with the error in the second process. The one with the assigned namespace reads: turtlebot246: - cmd_vel_mux: {yaml_cfg_file: ''} Should I set this file directly in the parameters? how do I find out which file to set? Thx

2013-06-13 05:24:42 -0600 received badge  Popular Question (source)
2013-06-12 06:20:20 -0600 commented answer multirobot interaction using turtlebot

Thank you Martin, I made a follow up questions due that its giving me some errors, but this has helped tremendously.

2013-06-12 06:16:40 -0600 asked a question Multirobot with one master using different namespaces


This is a follow up question from question 60760 multirobot-interaction-using-turtlebot.

When I implemented the advice on that question, which indicated that each turtlebot should run on its own namespace, I got the following errors in these 3 processes:

process[robot_pose_ekf-6]: started with pid [23337]
[ERROR] [1371052770.749560864]: No analyzers initialzed in AnalyzerGroup /turtlebot246/diagnostic_aggregator/analyzers
[ERROR] [1371052770.751441041]: Analyzer group for diagnostic aggregator failed to initialize!

process[cmd_vel_mux-7]: started with pid [23350]
[ERROR] [1371052771.860666093]: CmdVelMux : configuration file not found []

process[bumper2pointcloud-8]: started with pid [23386]
[ERROR] [1371052772.502205005]: Kobuki : no device port given on the parameter server (e.g. /dev/ttyUSB0)[/turtlebot246/mobile_base].
[ERROR] [1371052772.502885732]: Kobuki : could not initialise! Please restart.

How can I fix these errors?

The master is the workstation and both robots connect to it. I am trying to start each robot in a different namespace like this:

ROS_NAMESPACE=turtlebot246 roslaunch turtlebot_bringup minimal.launch

Without the namespace assignment the robots function properly (as long as there is only one active at a time).

Thank you very much,


2013-06-11 14:50:39 -0600 commented answer multirobot interaction using turtlebot

Hi, I am trying to implement this to move two turtlebots as well, sorry I am very new, how can I "need to remap everything related to a specific robot into a namespace"? I followed the example in the link, but how can I do roslaunch turtlebot_bringup minimal.launch in both without conflicts?

2013-06-05 08:22:16 -0600 received badge  Supporter (source)
2013-06-05 08:10:53 -0600 asked a question rviz incomplete turtlebot model - base.dae vs main_body.dae?


I get the following error when running rviz:

Could not load resource [package://kobuki_description/meshes/base.dae]: Unable to open file "package://kobuki_description/meshes/base.dae".

I went to the folder and the file is not there, I compared my files with the files in the kobuki_description at the yujinrobot GitHub and I have main_body.dae instead of the base.dae file. The model in rviz only shows the kinect, nothing more.

What should I do?

Newbie question, if I need to put the base.dae file from github, how do I do it?

Thank you very much,


Turtlebot 2, Ubuntu 12.04, Ros groovy