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Questions tagged [webots]

Webots is an open-source development environment used to model, program and simulate mobile robots.

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255 questions
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Quaternion calculation in "RosInertialUnit.cpp" of Webots ROS default controller

today I was taking a closer look at the quaternion calculation used in the "RosInertialUnit.cpp" file as part of the default ROS controller. I wanted to try out the InterialUnit using the "keyboard_teleop.wbt" - world and added the sensor to the…
Jan-Felix Klein
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Robot drift while and after turns

I am teleoperating a tricycle robot(froklift) in Webots. I am facing a problem while turning the robot. to and fro motion of the vehicle is OK. But after a small turn or a sharp one the robot skids in the normal direction of motion. To me this can…
Tahir Mahmood
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In webots 2019a, how to use Supervisor to reset the physical world with Python?

Recently, I am training a robot to go on itself with Reinforcement Learning in webots 2019a. However, I cannot figure out how to reset the world with Supervisor in Python. Thus I have to click the RESET button everytime it fails. So, how to use a…
54138qqqq
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How to install NAOqi controller for simulated NAO robots in Webots

I was following this guide: https://github.com/omichel/naoqisim/blob/master/README.md I installed msys64 and Vistual Studio. In msys I proceeded with the pacman commands as stated in the installation guide, which in turn donwloaded a bunch of stuff.…
Paweł P
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how to enable advanced streaming functionalities in webots R2019a

I am setting up a new webots environment using AWS instances and docker. I did the set up using a VNC Server but I think the new --stream option (in webots R2019a) is exactly what I need to access the webots GUI interface for my application. I…
lfelipesv
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problem with the reloading of the world in webots R2019a

i use the new version of webots R2019a. In the first step it Works fine, but the problem resid when i reload the world; the interface of the world become white. my operating system is win 10, and my Graphics Card: AMD Radeon HD 8750M. thanks for…
Emna
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Kinova Arm can not be converted from urdf using urdf2webots tool

I am trying to convert a URDF of a kinova arm into the PROTO format. The issue I have is that when I import the PROTO into Webots all the joints are rotated at weird angles. The URDF I am converting is the m1n6s300_standalone.xacro from kinova-ros…
Jack
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Interactive terminal for Python on Webots?

Is there an interactive, imperative way to manipulate Webots simulations using Python, instead of using the contorller script? E.g. the way you can interact with OpenAI Gym. Thanks!
Ares Fisher
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Failed to recompile webots for Python 3.6

I tried to recompile webots python API for Python 3.6 64 bit as I need that version for TensorFlow. I followed steps and tried compiling using both MSYS2 and Windows PowerShell. The compilations complains that files are not found although they exist…
wbadry
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Webots robot doesn't speak while trying to use it with an external Kinect

I'm trying to create a Webots simulation where I want my robot to speak when the Kinect camera detects a person. I have a Kinect V2 hooked up to the USB port and it can detect a person on its own by running my Python code using PyKinect2 and…
tankucukoglu
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webots - Can't load IA 32-bit .dll on a AMD 64-bit platform

I want to write Java-controllers for a webots Simulation. But whenever I try to build the Controller I get the error: "Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.…
Thea
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importing numpy in Webots simulator run out environment variable

I have try to import numpy in simulator Webots(7.0.3), it's successful to be used until several times that supervisor revert the simulation. It comes out these error message: Traceback (most recent call last): File "PyController.py", line 39, in…
jhy6
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graphviz issue when spawning Python script from C

I am using a graphviz library for Python. When I run the script from terminal, the graph is created, but when I start the script from C program using posix_spawn, I get error message saying that "ValueError: Program dot not found in path" (I have…
Boris Mocialov
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How can I get the true position of a Khepera Differential Wheels in Webots 6.4.1 Pro?

Is it possible to add a GPS node? That seems like it would be the simplest answer. I've also made some progress in creating a supervisor, but how can I get the supervisor controller and the differential wheels controller to run at the same time? I…
michaelAdam
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Can neural network fail to learn a function? and How to choose better feature descriptors for pattern recognition?

I was working on webots which is an environment used to model, program and simulate mobile robots. Basically i have a small robot with a VGA camera, and it looks for simple blue coloured patterns on white walls of a small lego maze and moves…
gautam264
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