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2020-10-24 23:42:17 -0500	received badge	● Famous Question (source)
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2018-08-08 01:44:55 -0500	marked best answer	Unable to set up keys while installing ROS Kinetic on Ubuntu 16.04 LTS I follow the instructions from here: http://wiki.ros.org/kinetic/Installat... but in the "set up your keys" step `sudo apt-key adv --keyserver hkp://ha.pool.sks-keyservers.net:80 --recv-key 421C365BD9FF1F717815A3895523BAEEB01FA116` i get this: Executing: /tmp/tmp.uIulXAU9Vn/gpg.1.sh --keyserver hkp://ha.pool.sks-keyservers.net:80 --recv-key 421C365BD9FF1F717815A3895523BAEEB01FA116 gpg: requesting key B01FA116 from hkp server ha.pool.sks-keyservers.net ?: ha.pool.sks-keyservers.net: Host not found gpgkeys: HTTP fetch error 7: couldn't connect: Success gpg: no valid OpenPGP data found. gpg: Total number processed: 0 gpg: keyserver communications error: keyserver unreachable gpg: keyserver communications error: public key not found gpg: keyserver receive failed: public key not found I searched and found many answers but i think none of them solve this problem.
2018-02-20 07:04:50 -0500	received badge	● Famous Question (source)
2018-01-31 03:55:16 -0500	asked a question	GPS doesn't show true data when moving in Gazebo GPS doesn't show true data when moving in Gazebo Hello everyone! I have installed Gazebo 8 with ROS Kinetic on Ubuntu 1
2018-01-31 03:06:14 -0500	commented question	how to do slam with a custom robot in Gazebo? Hello! I have the same problem a long time now. DId you find any solution to the problem? Thank you
2018-01-31 03:05:28 -0500	commented question	how to do slam with a custom robot in Gazebo? Hello! DId you find any solution to the problem? Thank you
2018-01-30 16:16:07 -0500	commented question	Gazebo simulation GPS fix Hi! Did you find any solution? Does it need a map of the environment first?
2017-12-10 09:01:11 -0500	answered a question	Simulate GPS sensor via ROS plugins (Hector_Plugins) I tried hector gps too but i had some errors. But when i simply added this plugin in my URDF: <!-- GPS Sensor
2017-12-06 17:58:06 -0500	received badge	● Notable Question (source)
2017-12-05 08:32:36 -0500	received badge	● Popular Question (source)
2017-12-05 07:56:26 -0500	edited question	Can't get sonar data with rostopic echo Can't get sonar data with rostopic echo I've added a sonar sensor on my custom robot model, and i also added the plugin
2017-12-05 07:56:26 -0500	received badge	● Editor (source)
2017-11-28 07:03:35 -0500	asked a question	Can't get sonar data with rostopic echo Can't get sonar data with rostopic echo I've added a sonar sensor on my custom robot model, and i also added the plugin
2017-11-24 14:03:35 -0500	commented question	Sonar on Pioneer 3-AT I have the first problem too. I use a sonar sensor and there is no topic published in the rostopic list. How did you sol
2017-11-19 11:36:26 -0500	commented question	Spawner gets blocked when trying to use libhector_gazebo_ros_sonar ok, i'll try it thank you!
2017-11-15 09:01:35 -0500	commented question	Spawner gets blocked when trying to use libhector_gazebo_ros_sonar Hello SorinV, i had the same problem and fixed it with your suggestions! But it's not able to recognize obstacles. Did y
2017-09-24 21:19:55 -0500	received badge	● Popular Question (source)
2017-09-22 17:43:08 -0500	asked a question	How to create a Battery usage plugin How to create a Battery usage plugin Hi everybody, I have a custom robot model in Gazebo and i want to create a battery
2017-09-19 14:26:29 -0500	commented question	Battery Usage Simulation in Gazebo Hello GGabria, i'm searching the same in python. Did you find it?
2017-09-14 15:03:39 -0500	received badge	● Famous Question (source)
2017-08-10 07:52:05 -0500	marked best answer	Problem with Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose]. Gazebo doesn't open Hello, when i try to roslaunch my model with the command: `roslaunch robot_control robot_diffdrive.launch` , i get the following error: ... logging to /home/elzombie/.ros/log/68fa861a-7467-11e7-b7d7-d4bed980b116/roslaunch-moshi-moshi-27013.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://moshi-moshi:34495/ SUMMARY ======== PARAMETERS * /robot_description: <?xml version="1.... * /robot_diff_drive_controller/angular/z/has_acceleration_limits: True * /robot_diff_drive_controller/angular/z/has_velocity_limits: True * /robot_diff_drive_controller/angular/z/max_velocity: 2.0 * /robot_diff_drive_controller/base_frame_id: chassis * /robot_diff_drive_controller/left_wheel: ['front_axle to f... * /robot_diff_drive_controller/linear/x/has_acceleration_limits: True * /robot_diff_drive_controller/linear/x/has_velocity_limits: True * /robot_diff_drive_controller/linear/x/max_acceleration: 0.6 * /robot_diff_drive_controller/linear/x/max_velocity: 0.2 * /robot_diff_drive_controller/max_acceleration: 6.0 * /robot_diff_drive_controller/pose_covariance_diagonal: [0.001, 0.001, 0.... * /robot_diff_drive_controller/publish_rate: 50 * /robot_diff_drive_controller/right_wheel: ['front_axle to f... * /robot_diff_drive_controller/twist_covariance_diagonal: [0.001, 0.001, 0.... * /robot_diff_drive_controller/type: diff_drive_contro... * /robot_diff_drive_controller/wheel_separation: 0.333 * /robot_joint_state_controller/publish_rate: 50 * /robot_joint_state_controller/type: joint_state_contr... * /rosdistro: kinetic * /rosversion: 1.12.7 * /rqt_robot_steering/default_topic: /robot_diff_drive... * /use_sim_time: True NODES / gazebo (gazebo_ros/gzserver) gazebo_gui (gazebo_ros/gzclient) robot_controller_spawner (controller_manager/spawner) rqt_robot_steering (rqt_robot_steering/rqt_robot_steering) rviz (rviz/rviz) urdf_spawner (gazebo_ros/spawn_model) ROS_MASTER_URI=http://localhost:11311 core service [/rosout] found process[gazebo-1]: started with pid [27035] process[gazebo_gui-2]: started with pid [27040] process[urdf_spawner-3]: started with pid [27045] process[rviz-4]: started with pid [27046] process[robot_controller_spawner-5]: started with pid [27047] process[rqt_robot_steering-6]: started with pid [27048] SpawnModel script started [ INFO] [1501350809.257317690]: Finished loading Gazebo ROS API Plugin. [ INFO] [1501350809.259887899]: waitForService: Service [/gazebo/set_physics_properties] has not been advertised, waiting... [INFO] [1501350809.276150, 0.000000]: Loading model XML from ros parameter [INFO] [1501350809.281451, 0.000000]: Waiting for service /gazebo/spawn_urdf_model [INFO] [1501350811.096386, 0.000000]: Calling service /gazebo/spawn_urdf_model [ INFO] [1501350811.130896442, 0.022000000]: waitForService: Service [/gazebo/set_physics_properties] is now available. Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose] Warning [parser.cc:778] XML Element[plugin], child of element[link] not defined in SDF. Ignoring[plugin]. You may have an incorrect SDF file, or an sdformat version that doesn't support this element. Warning [parser.cc:778] XML Element[plugin], child of element[link] not defined in SDF. Ignoring[plugin]. You may have an incorrect SDF file, or an sdformat version that doesn't support this element. [INFO] [1501350811.354676, 0.146000]: Spawn status: SpawnModel: Successfully spawned entity [ INFO] [1501350811.383864095, 0.146000000]: Physics dynamic reconfigure ready. [ INFO] [1501350811.389576299, 0.146000000]: Loading gazebo_ros_control plugin [ INFO] [1501350811.389719945, 0.146000000]: Starting gazebo_ros_control plugin in namespace: /robot [ INFO] [1501350811.393265260, 0.146000000]: gazebo_ros_control plugin is waiting for model URDF in parameter [/robot_description] on the ROS param server. [urdf_spawner-3] process has finished cleanly log file: /home/elzombie/.ros/log/68fa861a-7467-11e7-b7d7-d4bed980b116/urdf_spawner-3*.log [ INFO] [1501350811.575174528, 0.146000000]: Loaded gazebo_ros_control. gzclient: /build/ogre-1.9-mqY1wq/ogre-1.9-1.9.0+dfsg1/OgreMain/src/OgreNode.cpp:630: virtual void Ogre::Node::setScale(const Ogre::Vector3&): Assertion `!inScale.isNaN() && "Invalid vector supplied as parameter"' failed. Aborted (core dumped) [gazebo_gui-2] process has died [pid 27040, exit code 134, cmd /opt/ros ... (more)
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2017-08-07 12:17:48 -0500	commented answer	Problem with Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose]. Gazebo doesn't open it says i don't have enough points to mark my own answer
2017-08-07 12:17:06 -0500	received badge	● Notable Question (source)
2017-08-05 13:59:12 -0500	answered a question	Problem with Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose]. Gazebo doesn't open I fixed the problem by removing all the additional spaces in the <origin> element (in those who had more than one
2017-08-05 13:23:33 -0500	received badge	● Popular Question (source)
2017-07-29 13:42:38 -0500	edited question	Problem with Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose]. Gazebo doesn't open Problem with Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose]. Gazebo doesn't open Hello,
2017-07-29 13:36:55 -0500	asked a question	Problem with Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose]. Gazebo doesn't open Problem with Error [Param.cc:451] Unable to set value [-nan -nan -nan 0 -0 0] for key[pose]. Gazebo doesn't open Hello,
2017-07-18 13:19:33 -0500	received badge	● Famous Question (source)
2017-07-16 12:22:30 -0500	commented answer	rosparam ERROR: Parameter is not set i added the dashes
2017-07-16 12:20:42 -0500	commented answer	rosparam ERROR: Parameter is not set the command roscd robot_gazebo; find gave these: - . - ./CMakeLists.txt - ./launch - ./launch/robot.launch - ./src
2017-07-16 08:24:50 -0500	received badge	● Notable Question (source)
2017-07-16 05:23:13 -0500	commented answer	rosparam ERROR: Parameter is not set Don't worry, i corrected it first. So yes the output is all of these files that i wrote above.
2017-07-15 16:58:38 -0500	commented answer	rosparam ERROR: Parameter is not set It prints all of the CMakeLists.txt, launch, SDF, world and URDF files
2017-07-15 15:01:56 -0500	received badge	● Popular Question (source)
2017-07-15 14:13:02 -0500	commented question	rosparam ERROR: Parameter is not set The problem is when i run rosparam get /robot_description (with or whithout an / ) it gives me ERROR: Parameter [/robot_
2017-07-15 14:11:18 -0500	commented question	rosparam ERROR: Parameter is not set I am able to relaunch the model with roslaunch robot_gazebo robot.launch with an error message in terminal Error [Param.
2017-07-15 14:01:37 -0500	received badge	● Commentator
2017-07-15 14:01:37 -0500	commented question	rosparam ERROR: Parameter is not set Then in my robot_gazebo folder i opened the launch file and add <param name="/robot_description" textfile="$(find rob
2017-07-15 13:55:45 -0500	commented question	rosparam ERROR: Parameter is not set I used the url from github and did git clone https://github.com/andreasBihlmaier/pysdf.git in my working directory. It w
2017-07-15 13:44:01 -0500	commented answer	rosparam ERROR: Parameter is not set Thanks for the response. Still not working