Questions tagged [webots]
Webots is an open source and multi-platform desktop application used to simulate robots. It provides a complete development environment to model, program and simulate robots.
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Webots to epuck2 bluetooth remote control - unclear documentation / getting started
been looking at using the epuck2 with webots for educational purposes and I hit a snag.
Windows 11, Webots r2023b, epuck2 (latest firmware manually updated)
Bluetooth connection to the epuck2 works as ...
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Trying to launch my robotic arm in Webots fails
I am trying to launch my urdf file in Webots but somehow it launches the default robot from the ROS2 Simulators tutorial. I edited the robot_launch.py according to the changes in the tutorial but ...
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Different simulation speeds between Python controller and C++ controller in Webots
I am working on a project in which i want to use Reinforcement Learning to fly the Crazyflie drone. To do this, i need the webots simulation to run as fast as possible.
I managed to create a python ...
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Seeking Guidance on Achieving Extensive Control Over Webots Scene Elements
I need extensive control over the scene elements in Webots. My goal is to modify and move scene nodes, access sensors from multiple robots, and control the timestep in a centralized way. Does the ...
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ROS 2 Jammy: Unable to Install Webots distributed package
I'm currently trying to install the distributed package for ros2_webots but keep receiving the following error:
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webots mass question
I've set the robot's mass to 100,000 in Webots, but the robot's wheels are sinking into the ground. Adjusting the CFM to 1e-05 didn't improve the situation. How can I solve this? Can Webots only ...
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Webots wb_robot_step and basicTimeStep
In the Webots user manual, it is mentioned that wb_robot_step should be a multiple of basicTimeStep. This indicates how many times basicTimeStep is executed within wb_robot_step.
Assuming Scenario 1: ...
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How do I access a device inside a procedural proto node in the robot controller when the proto is regenerated mid-simulation?
Context: I've made a procedural proto node that contains several proto sensors. It works basically by having an MFNode field in the definition that I put my proto-gps in (that proto contains basically ...
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Can I see the logs when Webots crashes?
Wondering if there's something built-in already to show me the error/crash report when Webots crashes unexpectedly?
I'm getting intermittent crashes when interacting with custom protos in the scene ...
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PID Control on differential drive robot
I have tried to control the Pioneer robot in Webots simulator to follow the static target. This is the code I have developed. My main goal is to make a go-to single goal controller. The problem is ...
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How should I optimize a PID in Webots correctly?
As stated above, I need to optimize the PID gains (the feedback) in the torque controller for trajectory tracking I am currently doing.
This is what I have done until now:
Begin simple, with just one ...
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`urdf2webots` Converter is producing wrong results
To convert my URDF to a PROTO I ran: ros2 run xacro xacro path/to/in/file | python3 -m urdf2webots.importer --output=path/to/out/file, but I end up with some weird ...
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Ros2 Iron, Tutorial Webots, Setting up a robot simulation (Basic) Connection Issue
Following the basic tutorial with the goal to use webots with ros2, I've run into the following problem:
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webots, 4 wheel robot's heading angle by Rotation field
I'm using Webots R2023b.
I created a 4-wheeled robot following the tutorials (https://cyberbotics.com/doc/guide/tutorial-6-4-wheels-robot).
However, I'm having difficulty obtaining the heading angle ...
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Extern Controller, Cannot connect to Webots instance
I installed ROS2 on WSL2, Ubuntu22.04, and follow the tutorial in this link, which helped me install webots on Win11.
But when I execute this command ...
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Trouble downloading assets in Windows version 2023a
I'm trying to load a world on Webots, but I've been having trouble downloading the required assets.
Whenever I load the desired world, a pop-up appears saying "Downloading assets 0%", before ...
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Screen cropping and camera issues of Webots
An issue occurred where the screen was cut off when running webots. Also, I have a question because when I overlay the camera, the size is too small and I cannot drag or move the position with the ...
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"Cannot find any instance of Webots"
you guys are my last straw :)
I just started using ROS2 together with Webots. I downloaded ros-humble-webots-ros2 and Webots2023b and launched my scipt with
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Webots: add a RosCamera to ros_automobile controller?
I took the boomer example project and changed it to a ros_automobile controller by copying the source of ros_automobile into my project. It works and I can put it into gear and set the throttle and ...
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How do I use the WorldInfo gpsReference? It doesn't work as expected
I'm experiencing some challenges trying to get a realistic GPS output from my simulation. I'm based in New Zealand so my real-world Lat/Long is in the -40.3789 and 175.6129 range in WGS84, but when I ...
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WARNING: supervisor_manager: The process crashed some time after starting successfully. Fail to allocate bitmap
I am trying to navigate a drone moves towards target(car) using PPO algo. after 1320 episodes, I got this message:
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Webots: How to fix a base_link in simulation
So I set up a simulation of a robotic arm in Webots. However, the collisions between the base_link and the ground_plane seems to ...
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Importing 3D files in Webots
I am trying to import a 3D model of a Humanoid robot into Webots, I tried to import the whole model as an OBJ file using the CAD shape node or a shape node with a mesh node. Still, in both cases, the ...
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Unable to simulate a differential wheeled robot with kinematics mode (World file and controller code attached)
According to the webots documentation, a robot with differential wheels is automatically detected and can be automatically simulated in kinematics model if the physics node is disabled
The Robot ...
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Webots ros2_control and controller_manager issue
I have been trying for the past week searching forums and documentation to solve this issue. I am trying to make a simple simulation using ros2 humble and webots 2023b. I had switched from Gazebo ...
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Only one instance of the Robot class should be created
I am working on a Webots project using the Python R2021a version, in which four E-puck robots are used that push the box to target locations with the Python class for each robot "Class ...
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WebotsController cannot read ros2_controllers generated from Moveit
So, I have been trying to use a modified UR3e robot with Moveit in Webots simulation. The configurations are created by moveit setup assistant. I start from modifying the provided launch files from ...
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Use the robot_name of launch file to MyRobotDriver
I am following the tutorial Setting up a robot simulation (Webots) ROS2 Humble.
Here is my_robot.urdf file:
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Multiple Robots in Webots and Control Them independently with ROS2?
I am following the tutorial of Setting up a robot simulation in Webots (Basic) which is in ROS2 humble documentation. Here I have a .wbt world file, .urdf file according to the tutorial. I have added ...
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How to spawn and control 2 robots independently in webots with ROS2?
I am trying to make a simple application of 2 robots moving around in the webots simulator using ROS2 humble. I am following this tutorial. I have done the following things:
A description for each ...
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In a Blank Webots World, How to Operate the Mavic
I need to operate the mavic drone in a world other than its demonstration but when I do so the robot will just crash to the ground. I thought it was the world parameters or the controller that was ...
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Issues with Sending ROS2 Action from roslib.js to rosbridge_suite: Unable to Import Message Classes
I'm encountering difficulties sending a ROS2 action from roslib.js to rosbridge_suite.
The action is supposed to be handled by rosbridge_suite, but I'm encountering issues related to the import of ...
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Spot simulation in Webots becomes unstable after lifting one leg
I have written a custom controller for the Spot robot that comes in-built with Webots. based on the already given controller. I am having an issue where when I try to lift one leg off from the ground, ...
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How can i show on my browser what i see on Rviz?
Im on ROS2-Humble and i want to see my robot's location and movement on the map, the way i see it on Rviz, on my browser.
Like the picture above, I want from Rviz to get the Grid, RobotModel, TF, and ...
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How to use ros2 via wsl to webots in windows operating system?
Hi i had recently started on ros2 and i had installed it on the wsl (linux) in windows operating system. I had also installed the webots robotic simulator in the windows instead in wsl (linux). So is ...
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Webots ROS2 Tesla Example: Running Lane Following Code
I would like to know how to run the Webots ROS2 Tesla example that includes lane-following code using ROS 2. Specifically, I want to understand the steps required to set up the ROS 2 environment, ...
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How to use the DEF keyword for CadShape parts in Webots?
In Webots is it possible to define a DEF for defining a feature in order to reuse it more time in the same world
It works very well we do the tutorials online creating a solid and then a shape.
But it ...
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INFO: 'my_robot' extern controller: Waiting for local or remote connection on port 1234 targeting robot named 'my_robot'
I using ROS-Foxy on Ubuntu-20.04 installed using WSL 2. I also have installed R2023b version of webots on windows (the host). I followed the ROS-Foxy instructions to setup webots-ros2. However, when I ...
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How to get sensor data over a topic with webots_ros2 plugin?
I've installed webots 2023b and after I saw that a world with and inverted pendulum has been already shipped in the default installation directory, I decided to use that world for my project.
...
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How can I turn custom robot into a PROTO in Webots 2023?
I created a custom robot using the Robot Node by importing some meshes and creating boundary boxes with primitive shapes. I want to use it in another world, and I know the process involves creating a ...
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How do I increase the resolution of the Webots Pen device?
I'm using the Pen device at the moment but I'm trying to get the resolution better finer so I can see smoother curves.
I'm currently just using the Webots Grass appearance. Is scaling the used ...
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ROS2: name 'Node' is not defined
we are working on Webots environment with ROS2. when we launched the following example in the Webots-ros2 tutorial, we got the following error, could you help us to overcome that problem, thanks.
The ...
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name 'Node' is not defined
when we launched the following example in the Webots-ros2 tutorial, we got the following error, could you help us to get rid of that problem, thanks.
The example link: Setting up a robot simulation (...
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No module webots_ros2_driver
We would like to implement our controller developed by our team on CF2 simulator.
We got the following error:
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How to access devices in webot robot?
I have trouble finding out what devices are in my robot currently I am using e-puck but I want to use a robot such as the Tesla car. I want to know what devices I can control. Example if e-puck has 2 ...
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Accessing Proto Fields of Underlying Proto Object in Webots
I'm working on integrating Webots with FIRST Robot Code's builtin simulation utilities. As part of this, I've created a few base protos which define common types of parts, and extended them with ...
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Simulation of Mavic2 pro isn't holding drone on air
I've been trying to perform the simulation of Mavic2 pro on Webots using Python but during simulation the drone doesn't hold on air. I've tried "https://github.com/cyberbotics/webots/tree/master/...
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How to fix this: WARNING: > Speaker "engine_speaker": Impossible to play ''. Make sure the file format is supported
The full warning is
WARNING: Invalid URL 'C:/Users/xxxxx/OneDrive/Documents/my_Webots_learning/controllers/autonomous_vehicle/'. Sounds must be in '.mp3' or '.wav' format.
WARNING: MyMicro_Car "...
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DJI Mavic Pro 2 drone in Webots nosedives at high speeds
I am using the webots_ros2_mavic package found here to simulate a drone in Webots. The drone is controlled by publishing a simple Twist message with linear and angular velocity components.
I noticed ...
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How to import custom javascript modules from procedural proto nodes?
Is there a way to import my own javascript module from a procedural proto node? I have a .js file with some function defined that I would like to use in several .proto files. The file is called ...
