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2019-01-28 13:18:11 -0600 marked best answer when i am going to run "rostopic echo /cmd_vel" command i get following warning.

WARNING: topic [/cmd_vel] does not appear to be published yet

plz tell me how can i solve this warning....

2019-01-28 13:17:26 -0600 marked best answer How can i interface ros with FPGA kit?

i want to control my multi-link arm(it is based on fpga)using ros....Is it possible?how?

Thanks in advance...

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2014-04-08 18:47:02 -0600 commented answer failed to connect xbee.

ye sir....i am using series 1 xbees.......also i have checked with xbee pro....but same result....

2014-04-07 22:28:56 -0600 commented answer failed to connect xbee.

yes xbee on USB0.....

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2014-04-07 19:14:01 -0600 answered a question failed to connect xbee.

ya i can connect it using X-CTU........and also i have used ''rosrun rosserial_xbee setup_xbee.py -C /dev/ttyUSB0 0"......but same error....please any other way to solve it.....

2014-03-31 23:52:05 -0600 asked a question failed to connect xbee.

when i run the following command i got "Failed to connect to the XBee"

command..."rosrun rosserial_xbee setup_xbee.py /dev/ttyUSB0 0"

i am using ros-hydro.

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2014-01-28 17:31:36 -0600 marked best answer Anyone has used LabView-ROS Toolkit?

i am trying to connect labview with ros using labview-ros toolkit from clear path robotics.i am trying ro run inbuilt example of joystick demo.vi...but i got error-56 in labview....i think it is not able to publish data to given ros-ip......anyone know how to solve this problem.

thanking you

2014-01-28 17:31:23 -0600 marked best answer please,give me some idea to develop multi-link arm control under ros platform.

How to start this project in step by step? please reply.. thank you in advance...

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2013-11-19 17:17:27 -0600 asked a question Got the following error while running "roslaunch turtlebot_gazebo turtlebot_empty_world.launch"

[gazebo_gui-3] process has died [pid 2313, exit code 139, cmd /opt/ros/hydro/lib/gazebo_ros/gzclient __name:=gazebo_gui __log:=/root/.ros/log/a9439340-51f9-11e3-8a2c-f04da2b4f8ab/gazebo_gui-3.log]. log file: /root/.ros/log/a9439340-51f9-11e3-8a2c-f04da2b4f8ab/gazebo_gui-3*.log

i am using ubuntu 12.04 and ROS-hydro.

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2013-10-03 19:08:53 -0600 asked a question when i am going to run "rosrun rqt_gui rqt_gui" in ros fuerte i got following error.

Traceback (most recent call last): File "/opt/ros/fuerte/stacks/rqt-fuerte-devel/rqt_gui/bin/rqt_gui", line 17, in <module> sys.exit(main.main()) File "/opt/ros/fuerte/stacks/qt_gui_core-fuerte-devel/qt_gui/src/qt_gui/main.py", line 225, in main _dbus_server = ApplicationDBusInterface(context.dbus_base_bus_name) File "/opt/ros/fuerte/stacks/qt_gui_core-fuerte-devel/qt_gui/src/qt_gui/application_dbus_interface.py", line 46, in __init__ bus_name = BusName(named_bus_name, dbus.SessionBus()) File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 211, in __new__ mainloop=mainloop) File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 100, in __new__ bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop) File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 122, in __new__ bus = cls._new_for_bus(address_or_type, mainloop=mainloop) dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

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2013-09-16 17:50:23 -0600 answered a question Error while parsing the URDF file

but "rosrun urdfom check_urdf [your_file]" is used to run urdf file....and i want to parse my urdf file..for more detail follow the below link

http://wiki.ros.org/urdf/Tutorials/Create%20your%20own%20urdf%20file

http://wiki.ros.org/urdf/Tutorials/Parse%20a%20urdf%20file

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2013-09-16 02:44:57 -0600 asked a question Error while parsing the URDF file

while making URDF file,when i am going to run ./bin/parser my_robot.urdf i got following error:

[ERROR] [1379365363.499555623]: Could not open file [my_robot.urdf] for parsing.
[ERROR] [1379365363.499662656]: Failed to parse urdf file

plz tell me how to solve it.

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2013-09-03 22:44:47 -0600 commented answer Anyone has used LabView-ROS Toolkit?

yes i have installed rosbridge package.......i have given the ip on which ros is running.......plz tell me how can i solve it.....right now i am getting error 62....... error 62 is that the VI that opened the connection has finished executing and has closed, when a VI finishes executing in LabVIEW the resources are automatically closed to ensure any open resources arn't left dangling.

2013-09-02 03:08:29 -0600 asked a question error 62 in labview-ROS Toolkit example

whenever i am going to run in built example of (joystick demo)labview ros toolkit in labview i got error 62 in labview.anyone knows how to solve this error.

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