Hi liyungsen, As far as i know, the only way for making movie via Webots camera is to set your robot's timestep enough small, and than capture and save ...
Mohammad Afshar
Mohammad.Afshar@...
Aug 1, 2008 8:26 pm
2348
Hello, What about this: Use an "internal" Camera which is rendered inside the main window. (You can switch a Camera to internal mode by setting its ...
Hi, In old version of webots, I use the function "servo_motor_off" to STOP my wheel motor, for example, my code is if (key_value == ROBOT_KEYBOARD_UP) { /*...
Hello Liyungsen, In principle servo_motor_off(tag) and servo_set_motor_force(tag, 0.0) are completely interchangeable. What difference do you notice between...
Hi YVan, Thanks for your reply. The code below works well on version 5.1.12, but doesn't work on version 5.9.2. The wheel_servo1 cann't move forward on version...
Hello liyungsen, I'm not sure what you want to achieve ... Does your Servo have a Physics node ? I think you should simply try like this (for Webots 5.9.2): if...
Hi, We just released Webots 5.10.0. You can download it from the usual place: http://www.cyberbotics.com/products/webots/download.html Here is a copy of the...
Hi all, Im doing four-legged robot simulations using webots v5.8.0. In the physics plugin, in order to get the ground reaction forces, I am using the function...
Hello Chirstophe, I'not 100% sure, but if I remember some of my past experiments with dJointFeedback, what you describe makes sense. I think the reason is that...
Hello Yvan, Thank you very much for your quick and detailled answer. Actually I was thinking to that hypothesis but in that case, I was expecting that the...
Hello, So I have this device working on my OSX box, but I'm using it in webots under an Ubuntu VM, and it runs really slow. So slow in fact, that when I have...
Hi, I am trying some experience in a soccer team with the Webots. The algorithm which i implement run in a specific robot and sometimes i need to change the ...
Carlos Martins
lytuz.lytuz@...
Aug 11, 2008 10:44 am
2359
... algorithm ... change the ... not in ... Yes, that's correct. Functions whose name starts with the supervisor...() prefix can only be called from a...
Hi, I would like to find a way for changing the value of the Mass and the CenterOfMass for the nodes of a robot, during "simulation time". The only solution I...
Hi, I already have a Supervisor node and a controller program. The problem is that i receive the information to move the ball to another position in the ...
Carlos Martins
lytuz.lytuz@...
Aug 13, 2008 3:47 pm
2363
Hello Carlos, Yes, this is the optimal solution ! Indeed you just need to add an Emitter on your robot. Make sure that both the Emitter and Receiver use the ...
Hi, I met a problem when I using servo_enable_motor_force_feedback(). The error massage is // ControlTest.java:115: o_enable_motor_force_feedback(int,int) ¦Ë...
Hello Weiwei, At the first glance, your code seems correct, if servo is defined like this: int[] servo = new int[...]; However we cannot really read the javac...
It sounds like it could be a performance problem in the mapping of the serial port with Ubuntu VM. Does it run normally fast under Mac OS X? -Olivier sk wrote:...
Hi, we are having a licensed Webots version 5.1.11. While it works without problems on Debian, Kernel 2.6.18-6-k7, and on Ubuntu 7.04 Feisty, Kernel 2.60.20-17...
Matej Hoffmann
matej.hoffmann@...
Aug 14, 2008 1:13 pm
2368
Hi Matej, This might be a bug which was fixed in a more recent version of Webots. Could you give a try to Webots 5.10.0 (which you can download from ...
Hi: I have a question regarding the usability of webots in combination with Player/Stage. First of all, the big picture: We are a research group working on...
Hi Alex, The issue of a Player programming interface for Webots was discussed several times. To my best knowledge, some groups are interested by such an...
Hi, does anybody know how to do memory leak checking or things like that? I tried to change the controller program in the world file to "/usr/bin/valgrind"...
Sven Wehner
sven@...
Sep 1, 2008 11:11 am
2373
Hello Sven, This is possible but a bit tricky. Let's assume that the controller you want to "valgrind" is called "my_controller" and that it is located in the...
Hello, I am trying to generate a video, but at the end of the process I get this message: -bash: /var/tmp/mpeg_script.sh: No such file or directory I made...
Hi Claudio, It seems that the Mac OS X version of Webots around version 5.5.x had some problems with making movies. I would recommend you to upgrade to Webots...
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