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2022-11-23 10:02:54 -0500 marked best answer Need help on 'Unmet dependencies' error when installing ROS Melodic

System: I'm running Ubuntu 18.04.6 64 bit with kernel 5.4.0-131-generic on Intel Core i5 CPU

Please help me successfully install ROS Melodic When following the installation guide for ROS Melodic the following encountered an error: (I have scoured the internet to find a solution, but nothing has worked!)

(base) sam@nexus:~$ sudo apt install ros-melodic-desktop-full
Reading package lists... Done
Building dependency tree       
Reading state information... Done
ros-melodic-desktop-full is already the newest version (1.4.1-0bionic.20221025.215612).
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 python-rosdep-modules : Depends: python-rospkg-modules (>= 1.4.0) but it is not going to be installed
 python-rosdistro-modules : Depends: python-rospkg-

modules but it is not going to be installed
 ros-melodic-rqt-gui : Depends: python-rospkg-modules but it is not going to be installed
 ros-melodic-rqt-robot-monitor : Depends: python-rospkg-modules but it is not going to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

============================ Then I tried:

(base) sam@nexus:~$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  efibootmgr libfwup1 libllvm9 linux-hwe-5.4-headers-5.4.0-124 linux-hwe-5.4-headers-5.4.0-125 linux-hwe-5.4-headers-5.4.0-126 linux-hwe-5.4-headers-5.4.0-128
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  python-rospkg-modules

The following NEW packages will be installed:
  python-rospkg-modules
0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded.
948 not fully installed or removed.
Need to get 0 B/24.0 kB of archives.
After this operation, 135 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
(Reading database ... 341929 files and directories currently installed.)
Preparing to unpack .../python-rospkg-modules_1.4.0-1_all.deb ...
Unpacking python-rospkg-modules (1.4.0-1) ...
dpkg: error processing archive /var/cache/apt/archives/python-rospkg-modules_1.4.0-1_all.deb (--unpack):

 trying to overwrite '/usr/lib/python2.7/dist-packages/rospkg/__init__.py', which is also in package python-rospkg 1.1.4-1
Errors were encountered while processing:
 /var/cache/apt/archives/python-rospkg-modules_1.4.0-1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

============================ Then I tried:

(base) sam@nexus:~$ sudo apt --fix-broken install python-rospkg-modules
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  efibootmgr libfwup1 libllvm9 linux-hwe-5.4-headers-5.4.0-124 linux-hwe-5.4-headers-5.4.0-125 linux-hwe-5.4-headers-5.4.0-126 linux-hwe-5.4-headers-5.4.0-128
Use 'sudo apt autoremove' to remove them.
The following NEW packages will be installed:
  python-rospkg-modules
0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded.

948 not fully installed or removed.
Need to get 0 B/24.0 kB of archives.
After this operation, 135 kB of additional disk space will be used.
(Reading database ... 341929 files and directories currently installed.)
Preparing to unpack .../python-rospkg-modules_1.4.0-1_all.deb ...
Unpacking python-rospkg-modules (1.4.0-1) ...
dpkg: error processing archive /var/cache/apt/archives/python-rospkg-modules_1.4 ...
(more)
2022-11-23 00:27:48 -0500 answered a question Need help on 'Unmet dependencies' error when installing ROS Melodic

Before I asked for help, many probable solutions were found on the internet, but none worked. While doing a completely

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2022-11-22 22:26:30 -0500 edited question Need help on 'Unmet dependencies' error when installing ROS Melodic

Need help on 'Unmet dependencies' error when installing ROS Melodic System: I'm running Ubuntu 18.04.6 64 bit with kerne

2022-11-22 13:24:57 -0500 asked a question Need help on 'Unmet dependencies' error when installing ROS Melodic

Need help on 'Unmet dependencies' error when installing ROS Melodic System: I'm running Ubuntu 18.04.6 64 bit with kerne

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2021-04-08 16:58:31 -0500 asked a question Need simple clarity on Desktop/Laptop-PI4-OpenCR-Arduino usage

Need simple clarity on Desktop/Laptop-PI4-OpenCR-Arduino usage When creating a robot platform, is the following assumpti

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2020-01-28 19:15:55 -0500 marked best answer Is planet.ros.org down?

When I access this site, I get a 404 "There isn't a Github pages site here". This has been happening for about a week now. Is the site gone? If not, what's going on?

2020-01-28 03:23:26 -0500 received badge  Popular Question (source)
2020-01-27 16:49:06 -0500 asked a question Is planet.ros.org down?

Is planet.ros.org down? When I access this site, I get a 404 "There isn't a Github pages site here". This has been happe

2019-08-18 18:20:14 -0500 asked a question Need more info to build Turtlebot3 Conveyor

Need more info to build Turtlebot3 Conveyor I want to build the Turtlebot3 Conveyor version. Where do I get the parts (

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2019-01-09 14:51:17 -0500 asked a question Need specific clarity about ROS for Windows by Microsoft

Need specific clarity about ROS for Windows by Microsoft Please answer the following numbered questions. 1- Has your RO

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2016-12-12 19:31:36 -0500 asked a question Is there a biped humanoid simulation in ROS that uses Controlt!

Looking for good biped humanoid simulation example In ROS that uses ControlIt! Can anyone point me to such an example simulation?

2016-09-14 14:25:42 -0500 received badge  Popular Question (source)
2016-03-23 03:14:34 -0500 asked a question Is it possible to use more than one client library in the same workspace?

I purchased a book that uses the python client library on ROS Indigo on Ubuntu 14.04. I would like to follow the code examples in the book and test them in my catkin workspace; then I would like to convert the python code examples to the Julia client library and test them in Julia.

Should I/can I have the python code files and the Julia code files in the same catkin workspace, or should I have the different client libraries in separate catkin workspaces?

2015-04-23 03:34:13 -0500 marked best answer When will Debian packages available to Electric be available to Fuerte

I am working through the book "ROS by Example".

The book states:

"The latest version of Ubuntu is 12.04 (Precise) and the latest version of ROS is Fuerte. Many ROS users are still using Electric but Debian packages for Electric are not available for Precise."

What is the projected date for this situation to change?

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2014-04-20 12:52:27 -0500 marked best answer Need help with roslaunch openhrp3 falling-box.launch !!

When I execute: roslaunch openhrp3 falling-box.launch ----Eclipse is invoked and I see the IDE but the start button(s) is disabled. When I use menu GrxUI->Start Simulation, the Graph tab shows 3 windows that seem to be working. The 3D view tab does not have any falling boxes in it. The 3D view tab is blank. What should I do? Also, when I click on the falling-boxes.launch link on the http://code.google.com/p/rtm-ros-robotics/wiki/ROS_English page, I get:

Google

  1. That’s an error.

The requested URL /p/rtm-ros-robotics/source/browse/tags/latest/rtmros_common/openhrp3/launch/faling-boxes.launch was not found on this server. That’s all we know.

Also, here is the transcript of the terminal messages: sam@Mecha:~$ roslaunch openhrp3 falling-box.launch ... logging to /home/sam/.ros/log/2faa415a-a6ec-11e1-a8e5-406186e58fd3/roslaunch-Mecha-22078.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.

started roslaunch server http://Mecha:53041/

SUMMARY

PARAMETERS * /rosversion * /rosdistro

NODES / rtm_naming (openrtm/rtm-naming-restart) hrpsys_kill_all (openhrp3/openhrp-shutdown-servers) grxui (openhrp3/grxui.sh)

WARNING: unrecognized tag sphinxdoc ROS_MASTER_URI=http://localhost:11311

core service [/rosout] found process[rtm_naming-1]: started with pid [22096] process[hrpsys_kill_all-2]: started with pid [22098] /home/sam/prog/rtm-ros-robotics/rtm-ros-robotics/rtmros_common/openrtm/scripts/rtm-naming-restart: line 53: 21875 Killed $cosnames -start $port -logdir $currdir openhrp-aist-dynamics-simulator: no process found openhrp-collision-detector: no process found openhrp-model-loader: no process found openhrp-controller-bridge: no process found openhrp-path-planner: no process found (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) [hrpsys_kill_all-2] process has finished cleanly. log file: /home/sam/.ros/log/2faa415a-a6ec-11e1-a8e5-406186e58fd3/hrpsys_kill_all-2*.log

Fri May 25 22:37:53 2012:

Starting omniNames for the first time. Wrote initial log file. Read log file successfully. Root context is IOR:010000002b00000049444c3a6f6d672e6f72672f436f734e616d696e672f4e616d696e67436f6e746578744578743a312e300000010000000000000070000000010102000d0000003139322e3136382e302e31320000f90a0b0000004e616d6553657276696365000300000000000000080000000100000000545441010000001c000000010000000100010001000000010001050901010001000000090101000354544108000000215ec04f01005665 Checkpointing Phase 1: Prepare. Checkpointing Phase 2: Commit. Checkpointing completed. process[grxui-3]: started with pid [22119]

Fri May 25 22:52:53 2012:

Checkpointing Phase 1: Prepare. Checkpointing Phase 2: Commit. Checkpointing completed. ALSO, there are 2 archives at <openhrp3&gt; build="" that="" i="" am="" not="" installing="" since="" the="" instructions="" don't="" say="" to="" install="" them.="" the="" 2="" archives="" are:="" rtmtools100release_en.zip="" and="" j3d-1_5_2-linux-amd64.zip="" (="" i="" have="" a="" 64="" bit="" linux="" )="" should="" i="" install="" those="" two="" archives?<="" p="">

2014-04-20 12:50:57 -0500 marked best answer OpenRTM-ROS Build Errors

I'm trying to set up the humanoid simulations provided by OpenRTM-ROS. When following the instructions I execute:

rosmake --rosdep-install --rosdep-yes hrpsys_ros_bridge

but the make ultimately fails and I have no clue how to fix it. I'd really like to see the RTM stuff (humanoid HRP-4c simulation) work with ROS

Here's my result:

sam@Mecha:~$ rosmake --rosdep-install --rosdep-yes hrpsys_ros_bridge
[ rosmake ] Packages requested are: ['hrpsys_ros_bridge']                                                                                                
[ rosmake ] Logging to directory/home/sam/.ros/rosmake/rosmake_output-20120519-225832                                                                    
[ rosmake ] Expanded args ['hrpsys_ros_bridge'] to:
['hrpsys_ros_bridge']                                                                                
[ rosmake ] Generating Install Script using rosdep then executing. This may take a minute, you will be prompted for permissions. . .                     
Executing script below with cwd=/tmp
{{{
#!/usr/bin/env bash
#!/bin/sh
if [ ! -d /usr/share/doc/ttf-mscorefonts-installer ] ; then
  echo "ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true" | sudo debconf-set-selections 
  sudo apt-get -y --force-yes install ttf-mscorefonts-installer
  sudo fc-cache
fi

}}}

Executing script below with cwd=/tmp
{{{
#!/usr/bin/env bash
if [ ! -f /usr/local/bin/xdotool ]; then
  sudo aptitude install checkinstall libxtst-dev
  wget http://semicomplete.googlecode.com/files/xdotool-2.20110530.1.tar.gz -O /tmp/xdotool-2.2-$$.tar.gz
  mkdir /tmp/xdotool-2.2-$$; tar -C /tmp/xdotool-2.2-$$ -xvzf /tmp/xdotool-2.2-$$.tar.gz; cd /tmp/xdotool-2.2-$$/xdotool-2.20110530.1; ./configure; make; sudo mkdir -p /usr/local/man/man1; sudo mkdir -p /usr/local/lib; sudo mkdir -p /usr/local/include; sudo checkinstall -y
fi

}}}

Executing script below with cwd=/tmp
{{{
#!/usr/bin/env bash
#!/bin/bash
if [ ! -f /etc/apt/sources.list.d/openrave-release*.list ] ; then
  echo "deb http://ppa.launchpad.net/openrave/release/ubuntu `lsb_release -cs` main" |  sudo tee /etc/apt/sources.list.d/openrave-release.list
  sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 58E6B835EDC85D09
  sudo apt-get -y update
fi
sudo apt-get -y --force-yes install libcollada15dom-dev

}}}

Reading package lists... Done
Building dependency tree       
Reading state information... Done
libcollada15dom-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 152 not upgraded.
Executing script below with cwd=/tmp
{{{
#!/usr/bin/env bash
#!/bin/bash
codename=`lsb_release -cs`
if [ ! -f /usr/bin/glc-capture ] ; then
  if [ $codename = "lucid" -o $codename = "maverick" -o $codename = "natty" ] ; then
    sudo apt-get install -y build-essential cmake libx11-dev libxxf86vm-dev libgl1-mesa-dev libasound2-dev libpng12-dev
    sudo apt-get install -y ia32-libs
    sudo apt-get install -y gcc-multilib
    sudo ln -s /usr/lib32/libGL.so.1 /usr/lib32/libGL.so
    sudo ln -s /usr/lib32/libasound.so.2 /usr/lib32/libasound.so
    sudo ln -s /usr/lib32/libXxf86vm.so.1 /usr/lib32/libXxf86vm.so
    sudo ln -s /usr/lib32/libX11.so.6 /usr/lib32/libX11.so
    sudo ln -s /usr/lib32/libpng12.so.0 /usr/lib32/libpng.so
    wget https://raw.github.com/ienorand/glc/ppa/scripts/glc-build.sh
    chmod a+x glc-build.sh
    printf "/usr\n\ny\n" | sudo ./glc-build.sh
  else
    yes | sudo apt-add-repository ppa:arand
    sudo apt-get update
    sudo apt-get install -y glc
  fi
fi

}}}

Reading package lists... Done
Building dependency tree       
Reading state information... Done
build-essential is already the newest version.
cmake is already the newest version.
libx11-dev is already the newest version.
libxxf86vm-dev is already the newest ...
(more)
2014-04-20 12:49:43 -0500 marked best answer How to replace old ROS Turtle version with ROS Fuerte installation

I have the "old" ROS Turtle version installed on 64 bit Ubuntu 10.04 from long ago. Do I need to remove the ROS Turtle version before installing ROS Fuerte? If so, where may I find instructions to cleanly remove all ROS Turtle so I can install ROS Fuerte in a clean environment.

I'm fairly new to ROS. When you write "just source the setup.sh of the new installation". what do you mean by that?! Could you just give me exact steps to execute? Please verify that your answer implies I'm able to switch back and forth between ROS Turtle, ROS Electric and ROS Fuerte without any version interfering with the other? (so in that case, uninstalling Turtle is not necessary)

Thanks

2014-04-20 12:49:43 -0500 marked best answer Example of how to simulate humanoid biped using ROS/Gazebo

I would like to create a custom full-body humanoid biped using ROS/Gazebo. Are there any examples of how to do this? Is there a baseline humanoid example from which to build upon?

Thanks

TurtleBot_Fan

2014-04-20 12:23:09 -0500 marked best answer May I purchase a TurtleBot with an arm similar to Bilibot?

I'd be willing to pay more for a purchase option that would let me buy the TurtleBot FULL package that additionally includes "AN ARM SIMILAR TO THE BILIBOT" with the specs below:

*Custom Designed Acrylic, with aluminum support, providing the perfect balance between strength and low weight. *Geared Motors *Lifts objects from the ground up to 17 Inches in the Air *Lifts objects weighing up to 3 Lbs

Am I able to buy such a TurtleBot package? (I sure sure hope so!!) Please let me know how much this would cost.

Thanks.

2014-04-20 06:51:52 -0500 marked best answer rospack find beginner_tutorials failing

After doing a successful full desktop install of ROS Fuerte on Ubuntu Precise 64-bit, ( overlay too) I did:

$ roscd
$ roscreate-pkg beginner_tutorials std_msgs rospy roscpp    (this part worked)

then:

sam@Mecha:~/fuerte_workspace$ rospack profile
Full tree crawl took 0.022642 seconds.
Directories marked with (*) contain no manifest.  You may
want to delete these directories.
To get just of list of directories without manifests,
re-run the profile with --zombie-only
-------------------------------------------------------------
0.011132   /opt/ros/fuerte/stacks
0.010529   /opt/ros/fuerte/share
0.004067 * /opt/ros/fuerte/share/common-lisp
0.003998 * /opt/ros/fuerte/share/common-lisp/ros
0.002150 * /opt/ros/fuerte/share/swig
0.002037 * /opt/ros/fuerte/share/swig/1.3.29
0.001495 * /opt/ros/fuerte/share/doc
0.001454 * /opt/ros/fuerte/share/doc/pcl-1.5
0.001429 * /opt/ros/fuerte/share/doc/pcl-1.5/tutorials
0.001376   /opt/ros/fuerte/stacks/navigation
0.001299 * /opt/ros/fuerte/share/doc/pcl-1.5/tutorials/sources
0.000902   /opt/ros/fuerte/stacks/robot_model
0.000612   /opt/ros/fuerte/stacks/geometry_experimental
0.000593   /opt/ros/fuerte/stacks/image_pipeline
0.000474 * /opt/ros/fuerte/share/catkin
0.000450   /opt/ros/fuerte/stacks/geometry
0.000411   /opt/ros/fuerte/stacks/diagnostics
0.000398   /opt/ros/fuerte/share/ros
0.000387   /opt/ros/fuerte/stacks/vision_opencv
0.000371 * /opt/ros/fuerte/share/catkin/cmake

then: THIS IS THE PROBLEM:

sam@Mecha:~/fuerte_workspace$ rospack find beginner_tutorials 
[rospack] Error: stack/package beginner_tutorials not found

My .bashrc file in my home directory has the following source lines where I replaced one source line with another as prescribed in the installation instructions.... and executed . ~/.bashrc

# source /opt/ros/fuerte/setup.bash  <---this is commented out
source /home/sam/fuerte_workspace/setup.bash

The tutorial instructions say:

If this fails, it means ROS can't find your new package, which may be an issue with your ROS_PACKAGE_PATH. Please consult the installation instructions for setup from SVN or from binaries, depending how you installed ROS. If you've created or added a package that's outside of the existing package paths, you will need to amend your ROS_PACKAGE_PATH environment variable to include that new location. Try re-sourcing your setup.sh in your fuerte_workspace.

I didn't make any effort to " create or add a package that's outside of the existing package paths".

I don't quite understand how

"Please consult the installation instructions for setup from SVN or from binaries, depending how you installed ROS." helps me since I don't understand what's really happening here.

It seems that maybe the profile command should have listed my /home/sam/fuerte_workspace/ path?!....but I'm not sure.

Please advise.

2014-04-20 06:51:51 -0500 marked best answer How do I solve Fuerte overlay creation problem?

Using Ubuntu Precise 64 bit. Installation of Fuerte stopped cleanly at: Processing triggers for python-support ...

sam@Mecha:~$ sudo apt-get install python-rosinstall python-rosdep
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python-rosdep is already the newest version.
python-rosinstall is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.

sam@Mecha:~$ echo $PYTHONPATH
/opt/ros/fuerte/lib/python2.6/dist-packages:/opt/ros/fuerte/lib/python2.6/dist-packages:/opt/ros/fuerte/lib/python2.6/dist-packages:/opt/ros/fuerte/lib/python2.6/dist-packages:/usr/lib/python3.1/dist-packages

SO HERE"S THE PROBLEM when I try to do the overlay:

sam@Mecha:~$ rosws init ~/fuerte_workspace /opt/ros/fuerte
Traceback (most recent call last):
  File "/usr/local/bin/rosws", line 4, in <module>
    import pkg_resources
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2711, in <module>
    parse_requirements(__requires__), Environment()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 584, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: rosinstall==0.6.16

What to do?

Apparently, one should not combine pip and apt on Ubuntu, and preferably not use pip on Ubuntu since pip is for non-Ubuntu. How do I uninstall an old vcstools installation under Ubuntu Precise? (sudo pip uninstall rosinstall vcstools rospkg ---------does not work)-

I installed (DID NOT USE EASY_INSTALL)using the instructions at http://ros.org/wiki/fuerte/Installation/Ubuntu -----THIS USES APT...and I am not supposed to combine apt with pip. pip needs to be installed, but I should not use it according to TullyFoote.

Concerning "you did not tell us the error"...., what error are you taking about?! The "error", DistributionNotFound: rosinstall==0.6.16 is listed above......if you are referring to errors using pip....I NEVER USED PIP.

I'd rather use apt to uninstall rosinstall, vcstools, and instead of messing with the system manually.

It seems if I installed using apt, then I should be able to uninstall using apt, right?!

Can anyone tell me how to uninstall rosinstall, vcstools and rospkg using apt under Ubuntu Precise? (I never touched easy_install or pip)

2014-04-20 06:51:17 -0500 marked best answer Need guidance to create a simple simulation in Gazebo

I would like to create a simple simulation of a ball screw mechanism. I understand how I must create a mesh of a threaded ball screw hex nut and a mesh of a threaded ball screw shaft, but how would I connect them joint-wise?

How do I make the threaded bolt shaft turn to move the nut?

Is it necessary to do this as a plugin, and if not, would it be better to do it as a plugin as an easily distributable example for others?

Thanks.......................

2014-04-20 06:51:16 -0500 marked best answer Arm Simulator (URDF) Compatability with new (SDF)

Will the ARM Simulator (http://thearmrobot.com/trac/wiki/WikiStart) still work in the NEW Fuerte Gazebo SDF (Simulation Description Format)format? If not, what would I need to do to get it to work?.....