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2017-11-27 07:11:59 -0500 asked a question keyboard_teleop in TurtleBot simulation fails with Create configuration create.urdf.xacro.

keyboard_teleop in TurtleBot simulation fails with Create configuration create.urdf.xacro. Good morning to everybody! I

2017-11-27 07:08:57 -0500 asked a question keyboard_teleop in TurtleBot fails with create.urdf.xacro robot description in multiagent simulation

keyboard_teleop in TurtleBot fails with create.urdf.xacro robot description in multiagent simulation Good morning to eve

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2014-01-28 17:27:35 -0500 marked best answer How to extract data from the physics engine

Hi, I would to simulate the grasping of a hand and then to extract data such as :coordinates of points of contact, force applied by the model on the gresped object in those points, and deformations af the grasped object. Does anybody know if it is possible and how to do it?

thanks

2014-01-28 17:27:10 -0500 marked best answer How to import my robot?

Hi, I've to import a robot that I've made with pro-e. I've assembled it in xml and then I want to spaw it on gazebo. I don't know how to do it. I've tried to convert the xml file in urdf, so I tried to use rosrun gazebo spawn_model, but nothing happens. thank you

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2012-10-26 03:58:41 -0500 asked a question problem with contact sensor. Easy question

hi to everybody, I'm trying to pull out some data from the contact point of an object, so I chose to use the Gazebo Ros Bumper plug in. This is my sdf file

<?xml version="1.0"?>
  <gazebo version="1.0">
    <world name="default">
      <scene>
    <ambient rgba="0.0 0.0 0.0 1"/>
    <background rgba="1 1 1 1"/>
    <shadows enabled="true"/>
      </scene>

      <physics type="ode" update_rate="100">
    <gravity xyz="0 0 -9.8"/>
    <ode>
      <solver type="quick" dt="0.01" iters="100" sor="1.3"/>
    </ode>
      </physics>

    <!-- Ground Plane -->
    <include filename="ground_plane.model"/>

    <model name="cylinder1">
      <link name="link">
    <origin pose="0 0 0.5 0 0 0"/>
    <inertial mass="1.0">
      <inertia ixx="1" ixy="0" ixz="0" iyy="1" iyz="0" izz="1"/>
    </inertial>

    <collision name="cylinder1_geom">
      <geometry>
        <cylinder radius="0.5" length="1.0"/>
      </geometry>
    </collision>

    <visual name="cylinder1_vis">
      <geometry>
        <cylinder radius="0.5" length="1.0"/>
      </geometry>
      <material script="Gazebo/Grey"/>
    </visual>

    <sensor name='contact_sensor' type='contact' always_on='1' update_rate='1.000000' visualize='1'>
      <origin pose='0 0 0.5 0 0 0'/>
      <contact>
        <collision name="cylinder1_geom"/>
      </contact>
      <plugin name="gazebo_ros_bumper" filename="libgazebo_ros_bumper.so"/>
    </sensor>

    </link>
      </model>

      <model name="cylinder">
      <link name="link2">
    <origin pose="0 0 1.5 0 0 0"/>
    <inertial mass="1.0">
      <inertia ixx="1" ixy="0" ixz="0" iyy="1" iyz="0" izz="1"/>
    </inertial>

    <collision name="cylinder2_geom">
      <geometry>
        <cylinder radius="0.3" length="1.0"/>
      </geometry>
    </collision>

    <visual name="cylinder2_vis">
      <geometry>
        <cylinder radius="0.3" length="1.0"/>
      </geometry>
      <material script="Gazebo/Grey"/>
    </visual>


    </link>
    </model>

    <light type="directional" name="sun" cast_shadows="true">
      <origin pose="0 0 10 0 0 0"/>
      <diffuse rgba="1.0 1.0 1.0 1"/>
      <specular rgba=".1 .1 .1 1"/>
      <attenuation range="10" constant="0.8" linear="0.01" quadratic="0.0"/>
      <direction xyz="0 .2 -1.0"/>
    </light>

  </world>
</gazebo>

the problem is that when i type : rostopic echo bumper_states

this error appears on the roslaunch terminal :

Error [ContactSensor.cc:237] Contact Sensor[contact_sensor] has no collision[cylinder1_geom]

one for each clock cycle. I don't really know where i'am wronging.I'm so sorry for the silliness of the question, but I'm new in this world so also simple things are not discounted for me. Thanks a lot in advance.

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2012-10-12 22:32:00 -0500 asked a question How to use gazebo bumper plugin to get contact state?

I'm trying to pull out some data from the contact point of an object, so I chose to use the Gazebo Ros Bumper plug in. I call the plugin in the sensor section of my xml file. But now i don't know how to see my data displayed.

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2012-10-08 07:11:13 -0500 asked a question gazebo crash launching

hello, it happen that many time and completly at random when I launch gazebo the program crashes. the following line appears:

[gazebo_gui-3] process has died [pid 16996, exit code 139, cmd /opt/ros/fuerte/stacks/simulator_gazebo/gazebo/scripts/gui __name:=gazebo_gui __log:=/home/tommaso/.ros/log/3b3d0780-116a-11e2-8673-742f683abeb1/gazebo_gui-3.log]. log file: /home/tommaso/.ros/log/3b3d0780-116a-11e2-8673-742f683abeb1/gazebo_gui-3*.log

I looked for something about the error 139 but i didn't find anything interesting. thanks

2012-10-08 05:53:41 -0500 asked a question Problem launching a plugin

Hello, I'm trying to launch a gazebo plugin following all the instructions on: http://www.ros.org/wiki/simulator_gazebo/Tutorials/GazeboPluginIntro but on the bash this error appears:

Error [Plugin.hh:100] Failed to load plugin libanimate_joints.so: libanimate_joints.so: cannot open shared object file: No such file or directory

But I'm not able to find a sense..... Thanks

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2012-10-07 23:37:34 -0500 marked best answer uninstall ros

hi, I installed Ros some months ago because gazedo direct installation gave me many problem. So i installed Gazebo using the "ros users procedure". Now I would to uninstall ros in order to try again installing gazebo directly. When i type the comand: sudo apt-get remove ros , but it was not able to finde the packege.

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