Hitesh, If you're trying to run the navigation stack on your own robot, I'd suggest reading the following tutorial first, http://www.ros.org/wiki/navigation/Tutorials/RobotSetup/, as it will explain how the pieces of the navigation stack work and how you'll need to configure your robot. >From the errors you listed, it looks like your robot may not be publishing odometry information to the navigation stack. Also, amcl will not work without a static map... so that's expected. Hopefully, the tutorial will help, feel free to post again if you have other questions, Eitan On Tue, Apr 13, 2010 at 5:49 AM, hitesh dhiman wrote: > Hi all, > I've been trying to run the navigation stack. However, upon running > move_base.launch, i get the following message: > > [ WARN] 1271162502.543875000: Costmap2DROS transform timeout. Current time: > 1271162502.5438, global_pose stamp: 1271162501.8677, tolerance: 0.3000 > > I tried changing the tolerance value to 1. move_base.launch starts with the > following: > [ INFO] 1271162733.968657000: Subscribed to Topics: laser_scan_sensor > [ INFO] 1271162734.066727000: MAP SIZE: 199, 199 > > A second later, i start getting these messages: > > [ WARN] 1271162749.245438000: MessageNotifier [topic=scan, target=/odom > /base_laser ]: Dropped 100.00% of messages so far. Please turn the > [ros.costmap_2d.message_notifier] rosconsole logger to DEBUG for more > information. > > rxconsole gives the following: > Request for map failed, trying again... Warn /amcl > This could be because i'm not using any static map. Even so, move_base is > not publishing any messages out. > > Any help would be appreciated. I'm not able to figure out where the problem > is. > > -- > Regards, > Hitesh Dhiman > Electrical Engineering > National University of Singapore > > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > ros-users mailing list > ros-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ros-users > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > >