Questions tagged [gazebo]

gazebo is a simulator makes it possible to rapidly test algorithms, design robots, perform regression testing, and train AI system using realistic scenarios.

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Gazebo: SetPosition() function in the Joint class doesn't set the joint position and returns false sometimes

I am trying to initialize the positions of my robot using Gazebo Plugins. SetPosition() function of the Joint class is supposed ...
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13 views

Gazebo Compatibility with Red Hat Enterprise Linux Distribution

Does anyone know if it is possible to install and run Gazebo on a machine using the Red Hat Enterprise Linux Distribution? The company I am working at doesn't allow users to run Ubuntu typically so ...
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how to solve action client not connected?

does anyone knows how to solve error "action client not connected" this is error text: ...
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26 views

Looking for Beginners Tutorials on Navigation Stack and SLAM with Gazebo

As an undergrad working with SLAM algorithms, I'm looking for a step-by-step introduction to ROS navigation stack and gazebo. I am thinking of creating a simple box with a horizontal LiDAR array ...
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30 views

How can I specify parameter '~moveit_controller_manager'?

I followed this tutorial: Basic ROS MoveIt! and Gazebo Integration but when I launch moveit launch file from tutorial, I have error which says that I did not specify parameter '~...
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21 views

Robot rolls and rotates with different parameters

I am currently trying to build a robot with ackermann steering. As an example I found https://github.com/trainman419/ackermann_vehicle-1 for this robot. It works pretty well with the set parameters ...
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4answers
134 views

Why my robot is lying down in gazebo simulator?

this is my first post about ROS and Gazebo also I am new in ROS. I spawn KUKA robot in Gazebo using urdf file from KUKA github repository following answer from this question I spawned my urdf file in ...
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36 views

Gazebo crashes and burns launching empty world in new package [closed]

I'm launching empty_world copied into my package with the command roslaunch my_package empty_world.launch. Here is ...
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44 views

Looking for a model in a gazebo

I have a small world file, say ...
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1answer
39 views

Real world dynamic problem suggestion for PID [closed]

I need you guys to suggest me a problem that requires to change PID coefficients in different times. Lets say every 1 minutes the environment should change and readjust the PID’s parameters. Note that ...
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1answer
47 views

Running ROS on Digital Ocean?

Has anyone done this? Create a "droplet" or whatever they call it and set up ROS, and be able to actually run roscore, gazebo, rviz, etc. from there? I can imagine various complications, like having ...
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1answer
142 views

Why no cmd_vel topic when running Turtlebot simulation on ROS + Gazebo?

I have been having a very difficult time trying to understand why my system does not have the cmd_vel topic. I am trying to get a ROS system running with Gazebo so that I can work through tutorials ...
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1answer
32 views

setting custom variables on catkin workspace environment

I am developing a package for the ROS, in fact it is a package of resources / models for the Gazebo, and I need with the presence of this package in the Workspace of Catking, to be automatically set ...
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1answer
147 views

Spherical (Ball) Joint in Robot Model not Working in Gazebo

I'm having trouble including a spherical/ball joint in my robot model. I have tried using the 'ball' joint type defined by sdf (http://sdformat.org/spec?ver=1.6&elem=joint#joint_type) but the urdf ...
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1answer
133 views

Simulating the robot using moveit with ROS

I'm an absolute beginner in this field so I request you to help me although the question seems very silly. I want to send the robot (in simulation) pose goal from ROS node. I want to use to moveit ...
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1answer
39 views

Gazebo - Unable to load SensorPlugin

I want to write a Doppler Velocity Log (DVL) SensorPlugin for gazebo, but gazebo fails to load the plugin. My DvlPlugin.cpp looks like this ...
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2answers
198 views

Ackermann Motion Model Does not Drive in an Arc, but Turns on the Spot

Im trying to implement an ackermann motion model which estimates the x,y and theta for a robot I have. I have a gazebo simulation running which publishes a steering angle for the virtual tricycle ...
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0answers
710 views

ROS Gazebo Odometry Issue

I am setting up a Gazebo model for use with the navigation stack. I have been reading the Navigation Tuning Guide and am confused about the lidar data in the odom frame. I would think that the tuning ...
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0answers
230 views

How to simulate water/ pool for underwater vehicle in Gazebo/SimScape?

I have tried SimScape and gazebo but I did not get a solution for simulation of a swimming pool. Can somebody help with the same? Do I have to create the whole swimming pool using simple rectangular ...
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1answer
233 views

rospack Error: package 'script' not found

I am trying to run rosrun script forward.py but it gives me an error saying [rospack] Error: package 'script' not found In my ...
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1answer
85 views

Cmake Error While Buliding Pixhawk simulator

I am trying to run "px4 SITL simulation" using gazebo7 on my machine with "UBUNTU-14.04 LTS" using these commands: ...
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0answers
147 views

Getting started with motion planning

I have recently finished the coursera Motion Planning course and I am looking for a project to do, using ROS, OpenRave, Gazebo and similar tools. My project would be in the area of motion planning for ...
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0answers
132 views

How to make ROS enabled Quadrotor with raspberry pi? [closed]

I am working on a project "ROS enabled Quadcopter", and am using hector_quadrotor package. But I am facing problems in Flight controller. My world and quadcopter is running in gazebo but I don't ...
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1answer
284 views

how to get h*w point cloud from laser scan not just planer

I am trying to convert a laser scan into point cloud so i can use its cartesian cordintes for computer vision purpose. But when i do it it seems like the width of point cloud converted is only 1. ...
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1answer
2k views

System Requirements for Gazebo

According to this document from Gazebo's (Beginner:Overview) online web site, for the installation of Gazebo version 7.0 on Ubuntu OS, these are the following System Requirements: A dedicated GPU (...
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1answer
614 views

Roslaunch Gazebo Turtlebot Simulation Not Working

I have installed and am trying to run a turtlebot package using gazebo and roslaunch. Installation seems to have gone fine and I am now following the first tutorial, which just explains how to get ...
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1answer
603 views

gzclient: segmentation fault

I have archlinux indigo ros. My probelm is that when I type in terminal: $ gzclient Segmentation fault (core dumped) ... ...
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1answer
680 views

Gazebo joint->SetForce() call applies forces to the whole model. How to circumvent that?

The following code applies a force to the joint in an update method call. The problem is that the force seems to dissipate / is applied consecutively to other parts of the model, specifically the ...
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1answer
326 views

Software simulation vs. real world scale model simulation [closed]

There are high quality software robotics simulators like Gazebo available today. What is the difference between a pure software simulation and a real world (say RC) scale model simulation? Is it ...
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1answer
125 views

Suggestion for relevant non-complex simulator

I've recently started working on some localization algorithms like probabilistic road map and SLAM algorithms. What I'm looking for is a software that would help me in simulation for such algorithms. ...
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1answer
2k views

Multiple robots in ROS Gazebo SITL with separate MAVlink/MAVproxy codes

Background: This question is about simulating one ErleCopter and one ErleRover simultaneously for a non-commercial research. I would like to have the quadcopter follow a rover, which in turn is to be ...
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0answers
820 views

ROS/Gazebo: URDF Error: No valid hardware interface element found in joint

I am fairly new to ROS and Gazebo. I have posted this question on the ROS/Gazebo forums, but they appear to be dead. I am using ros-kinetic and gazebo7.3 on Ubuntu 16.04. I have been following this ...
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1answer
405 views

How does ODE determine contact points in Gazebo?

I was looking at the contact points for the Atlas in the DRCsim package. Each foot has 4 contact points at each vertex of the rectangle. I'd like to know how these points are determined. I've tried ...
2
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1answer
935 views

Simulating Dynamixel motors in Gazebo

I'm trying to simulate a humanoid robot using Gazebo with plugins. Since our actual model uses Dynamixel motors, I'd like to know how exactly they work to make the simulation as realistic as possible. ...
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3answers
598 views

Can we simulate a actuator with a very strong torque with a PID controller

I use gazebo to simulate a robot arm. To control its joints, I use PID controllers. As you might know, PID are sometimes pretty hard to tune and this is the case for a robotic arm. To avoid any tuning,...
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0answers
135 views

Waiting for the r_gripper_sensor_controller/gripper_action action server to come up

I started to use ROS hydro (Robot Operating System) and roscpp. I tested some examples to move the gripper of pr2 in Gazebo (especially the code in : http://wiki.ros.org/pr2_gripper_sensor_action/...
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0answers
63 views

Topics of object perception for pr2 [closed]

I started to use ROS hydro (Robot Operating System) on ubuntu, using the simulator "Gazebo" and roscpp library, in order to program some robots. In case of pick up and place known objects by robots, ...
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1answer
1k views

How to align solidworks global origin with assembly origin while exporting in solidworks to urdf

I have created a robot model in solidworks and exported in solidworks to urdf plug-in. When exporting the co-ordinates of the model is misaligned which is causing problem while using in ROS. As you ...
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0answers
609 views

Gazebo laser plug-in fails to publish scan results

I have added hokuyo laser plug-in to mu urdf file. I successfully launched the robot in gazebo and done required changes to visualize it in rviz. I didn't get any error but the laser scan results are ...
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1answer
2k views

Gazebo: moving joint with model plugin

This is my first week with Gazebo. The tutorials are clear (except for my dearth of C++ knowledge) but now that I'm working to move out on my own things are getting cloudy. I made a model comprising ...
2
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1answer
715 views

Tf frame origin is offset from the actual base_link

I have built my differential drive mobile robot in solidworks and converted that to URDF file using soliworks2urdf converter. I successfully launched and robot and simulated with tele-operation node. ...
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0answers
557 views

Gazebo or SimMechanics

I'm now considering to choose Gazebo or SimMechanics for simulating my quadruped robot. I set some standards for the simulation: Support Real-time application with ROS Simulate contact impact well(...
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1answer
1k views

Modelling Point Clouds for Collision Detection in Gazebo

I am currently applying path planning to my robotic arm (in Gazebo) and have chosen to use an RRT. In order to detect points of collision, I was thinking of getting a Point Cloud from a Kinect ...
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2answers
3k views

Using an RGB + Depth Camera to locate X,Y,Z coordinates of a ball

I've recently been trying to use Gazebo to do some modelling for a couple tasks. I have a robot that's effectively able to locate a ball and get x,y coordinates in terms of pixels using a simple RGB ...
3
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2answers
815 views

Using Gazebo installed on same machine in MATLAB

I am planning to use MATLAB and Gazebo for one of my course projects. However all the tutorials I have seen till now use Gazebo by using a virtual machine which has ROS and Gazebo installed. I have ...
2
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1answer
745 views

Is it possible to simulate vision (perception) in Gazebo (or other simulators)

Vision is important part of robotics and frequently it is unavoidable component of control loop. E.g. many clothes/garment handling algorithms rely on visual cues in deciding how to proceed. The ...
3
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2answers
578 views

Where to make changes for simulation project Bullet/Gazebo/ROS/Orocos

I am starting to develop robotics project which involves simulation (and maybe real world programs) of soft-body dynamics (for food processing) and clothes/garment handling (for textile industry or ...
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1answer
120 views

How to test GAZEBO works properly. Save windows don't show any component

How can I test whether my gazebo installation works properly or not? I'm trying to "save myworld" and "save as" options but no window is shown.
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1answer
857 views

gazebo import robot gives error

I'm trying to import the tutorial robot given at this link However this gives the following error: ...