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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8
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2answers
14k views

Where does Gazebo set the GAZEBO_MODEL_PATH environment variable?

I'm starting out with Gazebo (1.5) at the moment and am following a tutorial off the internet. In order to get Gazebo to find the model, the author advocates manually exporting the ...
5
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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 ...
4
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1answer
5k 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 (...
4
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1answer
131 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. ...
4
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2answers
715 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 ...
4
votes
1answer
586 views

world files for simulating roads and tracks

Hello I wanted to simulate a busy urban road,similar to Darpa Urban Challenge for an autonomous self-driving-car. I'm in search of simulators for that. I've seen gazebo since its integration with ROS ...
4
votes
1answer
2k 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 ...
4
votes
1answer
975 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
907 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 ...
3
votes
3answers
684 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,...
3
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1answer
1k 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. ...
3
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1answer
614 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 ...
3
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1answer
1k 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. ...
2
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1answer
3k 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 ...
2
votes
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 ...
2
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1answer
448 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 ...
2
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1answer
847 views

gzclient: segmentation fault

I have archlinux indigo ros. My probelm is that when I type in terminal: $ gzclient Segmentation fault (core dumped) ... ...
2
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1answer
1k 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 ...
2
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5answers
934 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 ...
2
votes
1answer
1k 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 ...
2
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1answer
500 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
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
2k 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 ...
2
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1answer
62 views

Running ROS, Gazebo and RViz on Macbook

I have recently started learning robotics. Being at uni, I had access to Linux PCs where I could easily run ROS and Gazebo. However, due to the current pandemic and closure of universities, I now have ...
2
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0answers
43 views

Corrupted Robot Model in Gazebo

I'm trying to run multiple instances (18 instances) of gazebo in parallel processes on my system to do reinforcement learning. However i'm running into an issue where the robot model in some of the ...
2
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0answers
45 views

Designing own robot for Gazebo simulation?

For my project I am trying to model and control a quadrotor with actuating arms. As I don't have a physical model with me, I want to simulate and control the robot using ROS and Gazebo. At the ...
2
votes
2answers
329 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 ...
2
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0answers
166 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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2answers
241 views

Gazebo not reading the material color in URDF

I have a chassis link that has casters. I would like the casters to be grey and the box to be blue. The ROS link doc mentions ...
1
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1answer
94 views

Controller algorithm implementation in ROS/Gazebo

I am doing some robotic simulations in ROS/Gazebo and wondering what is the best way (programming-wise since I don't have a CS background) to implement a robot's motion controller. Here are the ...
1
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2answers
242 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 Catkin to automatically set the ...
1
vote
1answer
133 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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0answers
42 views

Am I checking for a white pixel correctly?

I am currently going through all the pixels in an image to determine what is a white pixel. I then have to decide where to drive the bot. I am also using sensor_msgs/Image.msg that I get from the <...
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0answers
194 views

How to solve action client not connected?

Does anyone know how to solve error action client not connected? The error text is: ...
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0answers
227 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 ...
1
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1answer
436 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 ...
1
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0answers
182 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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0answers
1k 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 ...
1
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0answers
159 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/...
1
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0answers
65 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, ...
1
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0answers
722 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 ...
1
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0answers
694 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(...
0
votes
1answer
37 views

Importing a world into another world in gazebo

Is it possible to start with a with an empty world, empty.world and then import walls (other worlds into it)? I can't seem to find an import option in the gazebo ...
0
votes
1answer
30 views

Gazebo throwing error in opening model created in it

I created my world with gazebo9 and saved it. world$ tree . └── myworld ├── model.config └── model.sd Now when I start it with ...
0
votes
1answer
48 views

Can you refresh gazebo when you load through ROS?

I have a urdf model that I have loaded with: roslaunch my_robot world.launch I noticed that I gave the wrong color to a part of the robot. I have made changes. ...
0
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1answer
29 views

Why are shapes in ROS and Gazebo called links?

I have been trying to figure out why shapes in ROS are called links, ie <link> tags in urdf and ...
0
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1answer
121 views

Why can't the Controller Spawner find the expected controller_manager ROS interface?

I have a quadruped robot with base link (BL), 4 child links called LFT, LFT, RFT, RFT, T for thigh and each having 4 children with name LFC, LBC, RFC, RBC, C for Calf. 8 joints - Base link to 4 thighs ...
0
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1answer
29 views

Is a gazebo world unmodifiable after you hit save?

I created a world in gazebo with 2 levels and realized that I wouldn't see my robot moving in it. So I tried to delete the 2nd level but couldn't find a means to do so. Is the GUI not capable of doing ...
0
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1answer
45 views

My robot keeps getting saved as one cylinder leaving out the bottom cube

I created a robot in the model editor that is made up of a cube and a cylinder with a revolute joint between them but after saving it and inserting another instance into the world, I only get the ...
0
votes
1answer
37 views

Coordinates seem to show overlapping but RViz doesn't

How can you place two objects that seem to overlap with their units but appear stacked on top of each other [original intent] in RViz? I was watching this video tutorial on ROS and URDF. I have ...