webots-users at Yahoo! Groups

suction actuator

José Víctor Nuñez Nalda — Sat, 11 Jul 2009 15:02:21 GMT

In there a way to simulate a suction actuator (vacum vakve or something) in webots? Thxs

Re: servo with gravity

di_second_yh — Sat, 11 Jul 2009 00:09:13 GMT

thanks a lot, it's very helpful, and make me realise the fact of center of mass. Cheers, di_second

Re: Webots & Java

Hamid Reza Hassan Zadeh — Fri, 10 Jul 2009 15:47:22 GMT

Hello, Thank you, It's now working, but what the root ? Regards ... From: Fabien Rohrer Subject: Re: [webots-users] Webots &

Re: Webots & Java

Fabien Rohrer — Fri, 10 Jul 2009 14:12:02 GMT

Hi, I agree, this is still not very well documented... The supervisor API reflects the scene tree. Generally speaking, in order to get or to set a value, you

Webots & Java

Hamidreza — Fri, 10 Jul 2009 13:02:39 GMT

Hi all, I'm currently programming webots with Java, unfortunately the webots provide us with a poor java documentation so I want to see whether any one has

Re: servo with gravity

Yvan Bourquin — Thu, 09 Jul 2009 08:01:23 GMT

Hello, ... Just like a real motor, the Servo works by applying a torque to a axis. Indeed, calling wb_servo_set_motor_force(joint[2], 0) turns off the motor

servo with gravity

di_second_yh — Wed, 08 Jul 2009 23:17:39 GMT

Hello, I am curious about how does servo really work... For example, if I have a robot lifting left leg to the front at initial state and in controller, I use

Re: Question about gps_matrix and gps_euler

Yvan Bourquin — Wed, 08 Jul 2009 13:13:47 GMT

Hello Yongjin, What you guys call a "euler matrix" is actually a "rotation matrix" or "DCM matrix" (Direction Cosine Matrix). See there.

Re: Question about gps_matrix and gps_euler

Yongjin Liang — Wed, 08 Jul 2009 11:50:22 GMT

Thank you for the help. according to what you said, i need to computed the euler matrix by myself. could any one tell me what is euler matrix and how to

Re: Question about gps_matrix and gps_euler

Fabien Rohrer — Tue, 07 Jul 2009 16:05:28 GMT

Hi Yongjin, First of all, *wb_supervisor_get_sf_rotation* (documented

Question about gps_matrix and gps_euler

yl3908@... — Tue, 07 Jul 2009 14:29:33 GMT

Hi, I was converting some code written in webots5 to webots6. the code invole two method gps_get_matrix() and gps_euler(). From the file giving online said

Re: common error after cross compiling

Fabien Rohrer — Tue, 07 Jul 2009 07:10:45 GMT

Hi, Normally, this bug has been fixed since Webots 6.1.4. It was due the a missing library in the e-puck library. Installing the last Webots version (6.1.5)

common error after cross compiling

bolinsg — Tue, 07 Jul 2009 06:41:51 GMT

Hi,I am learning to cross compile and to view the examples of how the e puck works But I face the the following errors after cross compiling the e-puck

Re: Same settings for simulation but yielding to different results i

Yvan Bourquin — Mon, 06 Jul 2009 15:08:56 GMT

Hello Yuanlin Vega Liu, Note that some sensors are "noisy" in there default configuration. This is the case of the GPS which has a "resolution" fields that

Re: Need Help On E-puck Line

Fabien Rohrer — Mon, 06 Jul 2009 06:59:59 GMT

Hi, Normally, the comments in the source code and the pdf distributed in the e-puck_line folder should be sufficient to finalize this controller and get the