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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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 ...
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42 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 ...
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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 ...
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165 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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40 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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181 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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1answer
418 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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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 ...
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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/...
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715 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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679 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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17 views

Why do inverse directions give correct movement?

I am currently working on driving a bot based on the location of a white ball and I find that giving it negative angular movement moves it to the left rather than the right. Here's a code snippet for ...
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22 views

Syntax highlighting for source code of urdf & sdf (xml-based) files on Github

Note: I posted this on stack overflow but couldn't get an answer. I am trying it here. I have files that are in urdf [Unified Robot Description Format] for ...
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38 views

How to remove 'insert' paths in gazebo UI

I added some paths for model insertion in the gazebo UI. I have since move the projects elsewhere or deleted some of the models but can't seem to figure out how to delete the paths showing up under ...
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11 views

Simulation flight gives inconsistent sensor data

I made a short outdoors flight of 10 minutes with hector quadrotor on Ubuntu 16.04 Gazebo 7. The sensor readings and the path images are as attached. The flight was simple. I took of slowly, moved ...
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1answer
70 views

Unable to find my robot with an error

This question and the docs pointed me to $GAZEBO_MODEL_PATH as being the environment variable to change to include models in a gazebo world. However, I am getting ...
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21 views

Industrial robot kuka210 wobbling/vibrating in gazebo environment

i have spawn a kuka210 robot in gazebo but the robot is wobbling i tried to make change in urdf file and gazebo_control.yaml file, according to the given solution but it could not help, Why my robot ...
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43 views

Stale values in tf2 lookupTransform ROS-Gazebo

I have been trying to implement a low-level motion controller for my robot in ROS-Gazebo simulation. For this purpose, I need to convert some of my states i.e. CoM from body frame to Inertial (map) ...
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193 views

How to install hector_quadrotor in ROS Melodic?

From this link you can see that the hector_quadrotor is only available for indigo and kinetic so, I assume there are no melodic-compatible versions. On looking through the github issues, this has been ...
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1answer
54 views

Gazebo GUI doesn't show up

I tried Gazebo 9 and 10 on Ubuntu 18.04 MATE and it quits in a few seconds without showing Gazebo GUI. I'm running it on 32-bit Intel CPU with 950 Graphics chipset (pretty old). Here is what I see in ...
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67 views

Robot moves sideways in RVIZ ROS

I'm using robot_localization to fuse odom, imu and gps data on a husky robot. After fusion, the robot now moves forward in gazebo but sideways in rviz. I found this question. But the suggested ...
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1answer
179 views

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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0answers
27 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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254 views

Looking for a model in a gazebo

I have a small world file, say ...
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1answer
69 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
118 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: ...