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2018-09-18 19:51:06 -0500 marked best answer I tried to install PR2 simulation on Indigo but i get the command like this --- E: Unable to locate package ros-indigo-pr2-desktop -- What should i do?

output:

sudo apt-get install ros-indigo-pr2-desktopReading package lists... Done
Building dependency tree       
Reading state information... Done
N: Ignoring file 'ros-latest.list.' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'ros-latest.list.' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'ros-latest.list.' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
E: Unable to locate package ros-indigo-pr2-desktop
2018-09-18 19:49:15 -0500 marked best answer no name spaces found while running gazebo what to do?

output

[ INFO] [1475697876.777354049]: [twist_marker_server] Initialized.
Msg Waiting for master
Msg Connected to gazebo master @ http://127.0.0.1:11345
Msg Publicized address: 192.168.100.3
[ INFO] [1475697876.864233669]: Finished loading Gazebo ROS API Plugin.
Msg Waiting for master
Msg Connected to gazebo master @ http://127.0.0.1:11345
Msg Publicized address: 192.168.100.3
[ INFO] [1475697876.867930339]: waitForService: Service [/gazebo/set_physics_properties] has not been advertised, waiting...
Warning [ModelDatabase.cc:334] Getting models from[http://gazebosim.org/models/]. This may take a few seconds.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Warning [gazebo.cc:215] Waited 1seconds for namespaces.
Error [gazebo.cc:220] Waited 11 seconds for namespaces. Giving up.
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Node.cc:90] No namespace found
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
[WARN] [WallTime: 1475697907.379394] [0.000000] Controller Spawner couldn't find the expected controller_manager ROS interface.
[base_controller_spawner-5] process has finished cleanly
log file: /home/abhinav/.ros/log/f04c0b4a-8b36-11e6-804a-ec8eb5421ac3/base_controller_spawner-5*.log
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
Error [Visual.cc:2133] No mesh specified
2018-09-18 19:48:36 -0500 marked best answer i tried to run gazebo husky simulation but everytime i get a black screen on the gazebo!

my real time factor is zero also the screen is completely black! cant run the simulation

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2017-01-22 23:15:54 -0500 commented answer DC motor +Raspberry pi3+ROS

I have a LM298 motor driver. IS the corresponding library available?

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2017-01-21 11:29:25 -0500 asked a question DC motor +Raspberry pi3+ROS

Hello everyone, I want to control simple dc motors using R-pi3 and Ros, Is it possible? Not enough tutorials are available!

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2016-12-25 11:00:53 -0500 asked a question Moveit : moveit::planning_interface::MoveGroup group("right_arm")

i was going through the Moveit tutorials:

moveit::planning_interface::MoveGroup group("right_arm")

there was this error:

bash: syntax error near unexpected token `('

What must be the problem:-?

2016-12-24 07:45:09 -0500 received badge  Popular Question (source)
2016-12-23 06:06:06 -0500 commented answer please create subscriber to the marker (warn)

How do we add markers after opening RViz? It also says that no tf data , Actual error no FIXED Frame exists

2016-12-23 05:54:39 -0500 answered a question please create subscriber to the marker (warn)

I did all the steps in rviz tutorial

2016-12-23 05:51:16 -0500 asked a question please create subscriber to the marker (warn)

i did:

rosrun using_markers basic_shapes

and got the warning:

please create a subscriber to the marker

I dont get it i want to create the basic shapes in rviz and i dont noe whats going on

2016-12-21 12:19:59 -0500 asked a question why cant we use rosrun turtlesim turtle_teleop_key?

what i did was :

roslaunch beginner_tutorials turtlemimic.launch

Then two turtle simulators opened

and then i did:

$ rostopic pub /turtlesim1/turtle1/cmd_vel geometry_msgs/Twist -r 1 -- '[2.0, 0.0, 0.0]' '[0.0, 0.0, -1.8]'

the both turtles started rotation

I want them to move using ARROW keys so i killed the above process and then i did:

rosrun turtlesim turtle_teleop_key

but it doesnt work! so how should i control them using arrow keys?

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2016-12-21 02:52:11 -0500 asked a question I tried to install ROS again after uninstalling and i'm getting these error

The following packages have unmet dependencies: ros-kinetic-desktop-full : Depends: ros-kinetic-desktop but it is not going to be installed Depends: ros-kinetic-perception but it is not going to be installed Depends: ros-kinetic-simulators but it is not going to be installed E: Unable to correct problems, you have held broken packages.

How can i resolve this issue!

2016-12-21 02:46:22 -0500 commented answer I just uninstalled ros because of some error and i want to install it again> Need Help!

yeah! problem solved thanks alot

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2016-12-20 12:41:07 -0500 commented question I just uninstalled ros because of some error and i want to install it again> Need Help!

I have done all the ROS uninstallation steps properly.. Still i am facing the problem!

2016-12-20 12:40:03 -0500 asked a question I just uninstalled ros because of some error and i want to install it again> Need Help!

bash: /opt/ros/kinetic/setup.bash: No such file or directory

I am getting this errror in terminal and i am not able to install ros again! Can somebody please help me?