fish24's profile - activity

I'm trying to run the command rqt on my computer to display topics in the topic list but the window which pops up is empty, I can see just the title from the taskbar "Default -rqt".

Tutorial: http://emanual.robotis.com/docs/en/pl...

ROS version: Kinetic

Turtlebot3 Waffle Pi

Ubuntu Xenial

Hi! I would like to learn how to use opencv and ros kineitc with python but I really do not know from where to start. I installed opencv3, cv_bridge, usb_cam, etc. I have understand how to use cv_bridge but there are so many things that I need a bit of help.

I want to connect a Logitech camera.

Can anyone please briefly explain how to start or give me a tutorial?

Thank you!

ROS kinetic Linux Xenial(16.04)

How to use opencv and ros kinetic Hi! I would like to learn how to use opencv and ros kineitc with python but I really d

Hi. I had a similar problem with ROS recently. This is how I solved it: After I have seen "File to patch" I pressed Ctrl

How did you manage to solve it? I have the same error

It worked. I had some problems ("<package> is not installed, so not removed") but I managed to solve them manually

Hi! I have accidentally deleted python2.7 and now I can't run roscore. I tried to reinstall it but..

roscore
^C... logging to /home/fish/.ros/log/b4e7951a-b47d-11e9-9717-9cb6d08c99cd/roslaunch-fish-XPS-13-9370-6045.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

^CTraceback (most recent call last):
  File "/opt/ros/kinetic/bin/roscore", line 70, in <module>
    roslaunch.main(['roscore', '--core'] + sys.argv[1:])
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/__init__.py", line 306, in main
    p.start()
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py", line 268, in start
    self._start_infrastructure()
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunc

h/parent.py", line 226, in _start_infrastructure
    self._start_server()
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py", line 177, in _start_server
    self.server.start()
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/server.py", line 376, in start
    code, msg, val = ServerProxy(self.uri).get_pid()
  File "/usr/lib/python2.7/xmlrpclib.py", line 1243, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1602, in __request
    verbose=self.__verbose
  File "/usr/lib/python2.7/xmlrpclib.py", line 1283, in request


    return self.single_request(host, handler, request_body, verbose)
      File "/usr/lib/python2.7/xmlrpclib.py", line 1311, in single_request
        self.send_content(h, request_body)
      File "/usr/lib/python2.7/xmlrpclib.py", line 1459, in send_content
        connection.endheaders(request_body)
      File "/usr/lib/python2.7/httplib.py", line 1053, in endheaders
    self._send_output(message_body)
  File "/usr/lib/python2.7/httplib.py", line 897, in _send_output
    self.send(msg)
  File "/usr/lib/python2.7/httplib.py", line 859, in send
    self.connect()
  File "/usr/lib/python2.7/httplib.py", line 836, in connect
self.timeout, self.source_address)
  File "/usr/lib/python2.7/socket.py", line 566, in create_connection
    sock.connect(sa)
      File "/usr/lib/python2.7/socket.py", line 228, in meth
        return getattr(self._sock,name)(*args)
    KeyboardInterrupt

Please help! How can I repair it?

Ubuntu Xenial ROS Kinetic

Accidentaly deteled python2.7 and roscore is dead Hi! I have accidentally deleted python2.7 and now I can't run roscore.

In my case it did not work, but I used: sudo apt-get --reinstall install python-rosdep

Hi! I am beginner in ROS and Turtlebot3 and I'm trying to run this command line roslaunch turtlebot3_bringup turtlebot3_remote.launch to launch robot state publisher and I have this error:

while processing /home/fish/catkin_ws/src/turtlebot3/turtlebot3_bringup/launch/includes/description.launch.xml:
Invalid <arg> tag: turtlebot3_description
ROS path [0]=/opt/ros/kinetic/share/ros
ROS path [1]=/home/fish/catkin_ws/src
ROS path [2]=/opt/ros/kinetic/share. 

Arg xml is <arg default="$(find xacro)/xacro --inorder '$(find turtlebot3_description)/urdf/turtlebot3_$(arg model).urdf.xacro'" name="urdf_file"/>
The traceback for the exception was written to the log file

It looks like I do not have urdf file

Please help!

Ubuntu Xenial ROS version: Kinetic Tutorial: http://emanual.robotis.com/docs/en/pl...

I managed to solve it. I have reinstalled turtlebot3 packages on my PC, and then delete the folder. Link to turtlebot3

Error:Invalid <arg> tag: turtlebot_description Hi! I am beginner in ROS and Turtlebot3 and I'm trying to run this

I'm trying to launch turtlebot3_bringup and turtlebot3_remote on PC with this command line:

$ roslaunch turtlebot3_bringup turtlebot3_remote.launch

The result:

[turtlebot3_remote.launch] is neither a launch file in package [turtlebot3_bringup] nor is [turtlebot3_bringup] a launch file name
The traceback for the exception was written to the log file

What can I do?

Link to the tutorial: http://emanual.robotis.com/docs/en/pl...

ROS: Kinetic

OS: Ubuntu Xenial (16.04)

TurtleBot3 Waffle Pi

I have not worked in the workspace. I managed to solve the problem. Thank you for the help!

I do not have anything on top of the window, I have tried to find it.

rqt window empty I'm trying to run the command rqt on my computer to display topics in the topic list but the window whi

I solved it. Before opening a new terminal to write: $ roslaunch turtlebot3_bringup turtlebot3_remote.launch , go in you

Load TurtleBot3 on Rviz I'm trying to launch turtlebot3_bringup and turtlebot3_remote on PC with this command line: $ r