2019-01-03 13:05:46 -0600 answered a question IMU plug in noise data of linear acceleration I ran into this issue recently trying to use Google Cartographer on bagged data from Gazebo. The 3D SLAM algorithm perf 2018-11-09 09:18:30 -0600 edited answer how can i use friction coefficient more than 1? I would experiment with setting mu and mu2 to really high values (>1) anyways, e.g. 100, 1000, Inf, just to see what 2018-11-09 09:18:06 -0600 edited answer how can i use friction coefficient more than 1? I would experiment with setting mu and mu2 to really high values (>1) anyways, e.g. 100, 1000, Inf, just to see what 2018-11-09 09:17:41 -0600 answered a question how can i use friction coefficient more than 1? I would experiment with setting mu and mu2 to a really high values (>1) anyways, e.g. 100, 1000, Inf, just to see wha 2018-09-24 09:14:30 -0600 answered a question Traffic Light Simulation See: Gazebo Newsletter June 2018: Featured Model (Traffic Light) Example Pull Request for Traffic Light control Changi 2018-09-18 16:19:02 -0600 marked best answer Gazebo crashes intermittently (race condition?) when run from roslaunch alongside ROS (gazebo_gui-2, gazebo_gui-3]) Summary Gazebo will crash intermittently when I run it from roslaunch in conjunction with other ROS nodes If I roslaunch a .launch file that starts a .world file via gazebo_ros, Gazebo does not crash. However, my .launch file also contains a .urdf with plugins (that may use ROS and Gazebo messaging) and some other ROS nodes (containing SMACH finite state machines for example). In this case, Gazebo does crash intermittently, once every 2 - 10 launches. The crashing appears to become more frequent (a crash every 2-4 launches) as the number of ROS node's in the launch file goes up. My solution is to Ctrl-C the Terminal window and then simply roslaunch the .launch file again. Sometimes I have to repeat this process a couple times. Repeated Gazebo crashes also appear to become more frequent as the number of nodes I'm launching goes up. A weird trick, if I: \$ roslaunch myfile.launch and then immediately click on my terminal window and drag-it across my monitor. Gazebo will almost never crash. I have no idea why this works. I just know it does (for me). Error Message libGL error: failed to create drawable ... [gazebo_gui-2] process has died ... https://ibb.co/f93iEb Also, I think there's a segmentation fault one, but I wasn't able to produce it on demand (as I said, the crashing seems somewhat random / non-deterministic) Graphics Card I have a non-NVIDIA Graphics Card: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Bonaire XTX [Radeon R7 260X/360]  Related Looking through the forums, there seem to be a number of related questions: On startup of gazebo I get intermittent error Diagnosis: ROS or Gazebo threading bug, race condition, graphics card Workaround: Set gazebo_ros debug parameter to true, set node respawn="true" in .launch file gazebo crashes immediately using roslaunch after installing gazebo ros packages gazebo_gui-3 error when starting gazebo with roslaunch Diagnosis: gazebo_ros can't handle extra roslaunch __name and __log arguments Workaround: start gazebo from separate terminal with rosrun Solution?:https://github.com/ros-simulation/gaz... Aside When I Ctrl-C the terminal window where I ran roslaunch, I usually get the following [gazebo-2] escalating to SIGTERM message:  [gazebo-2] escalating to SIGTERM [rosout-1] killing on exit Exception ignored in: Traceback (most recent call last): File "/usr/share/gdb/python/gdb/__init__.py", line 43, in flush def flush(self): KeyboardInterrupt [master] killing on exit shutting down processing monitor... ... shutting down processing monitor complete done  Including this in case it is relevant How to run Gazebo without crashing? Is there something obvious I'm missing. What's the best way for me to go about diagnosing/fixing this problem? Thank you. 2018-09-18 16:19:02 -0600 received badge ● Scholar (source) 2018-09-17 10:44:39 -0600 answered a question Tower of Hanoi: Objects jumping when stacked Try setting the maxVel parameter to a low value. e.g: 0 2018-09-14 08:25:03 -0600 answered a question Where to find gazebo plugin source files? Gazebo Plugins source: https://bitbucket.org/osrf/gazebo/src/default/plugins/ gazebo_ros_plugins source: https://gith 2018-09-12 09:23:00 -0600 commented question SetVelocity() not working in Gazebo7 SetVelocity() works for me. Maybe provide some project/example code to show how you are using SetVelocity() and in what 2018-09-12 09:19:13 -0600 commented answer Setting friction params At least according to the Bitbucket issue (https://bitbucket.org/osrf/gazebo/issues/2068/directional-friction-still-brok 2018-09-12 09:17:56 -0600 commented answer Setting friction params At least according to the Bitbucket issue, the issue is resolved as of 2017/09/11. 2018-09-12 09:15:57 -0600 answered a question Read sensor data with ROS Now I want to add some sensors to my robot and read the data from ROS. How can I do it? Do I need to code a Gazebo pl 2018-09-11 17:09:21 -0600 answered a question Physics parameters for a rolling ball 1) Should I increase the mu1,mu2 to achieve that? Sure, try setting mu1, mu2 to 0.1-1 respectively (0.005 is really 2018-08-31 15:20:38 -0600 edited answer Creating a Constant Force Spring Have you tried using the SDF - Joint - Stiffness Element? Example: model->GetJoint("joint1")-> 2018-07-27 08:45:32 -0600 answered a question Array elements are skipped Looking at the OnUpdate() method in your code... public: void OnUpdate() { this->model->GetJoint("joint1")-> 2018-07-27 08:11:30 -0600 commented question Timing, function and sequence of the gazebo "world update cycle" and the "plugin update cycle" Did you ever get an official answers to these questions? 2018-07-27 06:07:55 -0600 received badge ● Nice Answer (source) 2018-07-26 15:38:31 -0600 edited answer Setting initial joint position If you are launching from ROS,