Search found 1025 matches

by fferri
30 Jul 2014, 10:13
Forum: General questions
Topic: problem with depth sensor when running Linux in VM
Replies: 8
Views: 5342

Re: 3.1.2 possible regression for SICK S300 sensor

It seems the RGB information of a vision sensor is there, but the depth information is not.
(note: I'm running in a virtual machine, Ubuntu 14.04)

As a double check can you suggest me a scene where the depth sensor is demoed so that I'm sure to be testing it properly?
by fferri
30 Jul 2014, 09:34
Forum: General questions
Topic: problem with depth sensor when running Linux in VM
Replies: 8
Views: 5342

problem with depth sensor when running Linux in VM

I'm using V-REP 3.1.2 linux 64-bit, and I'm unable to get correct readings from the provided SICK S300 sensor. It used to work in 3.1.0, but in 3.1.2, if you set script parameter showLaserSegments=true, you'll see that laser segments look like if they are "inside" the sensor mesh. Screensh...
by fferri
25 Jun 2014, 10:24
Forum: General questions
Topic: ros: restarting simulation... useless api StartSimulation
Replies: 3
Views: 2991

Re: ros: restarting simulation... useless api StartSimulatio

Here is what I do: simulation now is running: $ rosservice list | grep simRosSt.*Simulation /vrep/simRosStartSimulation /vrep/simRosStopSimulation $ services are there... let's stop the simulation: $ rosservice call /vrep/simRosStopSimulation "{}" result: 1 $ now I wait until the /vrep/inf...
by fferri
24 Jun 2014, 18:43
Forum: General questions
Topic: ros: restarting simulation... useless api StartSimulation
Replies: 3
Views: 2991

ros: restarting simulation... useless api StartSimulation

I'm running V-REP headless for simulating my robot in ROS. I sometimes need to restart the simulation (e.g. the robot falls off the simulation scene :D) but once I stop the simulation with /vrep/simRosStopSimulation, no ros services for controlling V-REP are available anymore, so it is not possible ...
by fferri
26 Feb 2014, 16:51
Forum: General questions
Topic: how to avoid deformable or bending links
Replies: 5
Views: 3910

Re: how to avoid deformable or bending links

Also, lowering the masses (I've changed them to 0.1, 0.15, and 0.2 respectivelly) seems to help a bit.
However the effect never goes away (both in Bullet and ODE).
by fferri
26 Feb 2014, 14:36
Forum: General questions
Topic: how to avoid deformable or bending links
Replies: 5
Views: 3910

Re: how to avoid deformable or bending links

Is it relevant that joints do not physically touch the link object?

To me the link object for the bogie and the two flippers it was not relevant (I could have used a dummy if only it allowed maintaining dynamically enabled joints), so I created a 5cm x 5cm pure plane with mass 0.3 Kg.
by fferri
26 Feb 2014, 12:04
Forum: General questions
Topic: how to avoid deformable or bending links
Replies: 5
Views: 3910

Re: how to avoid deformable or bending links

This is the dynamic content during simulation:

Image

I cannot try with Vortex, but with ODE the bending effect is less prominent.

Here is the scene file
by fferri
26 Feb 2014, 09:32
Forum: General questions
Topic: how to avoid deformable or bending links
Replies: 5
Views: 3910

how to avoid deformable or bending links

Hello, Again I'm trying to design a dynamic simulation for our robot, starting from the most complex part which is the tracked flipper-bogie-flipper body. I believe I followed the recommendations for designing a dynamics simulation and here's the model tree during the simulation: http://s28.postimg....
by fferri
06 Feb 2014, 10:14
Forum: General questions
Topic: pass-thru passive joint
Replies: 1
Views: 1977

pass-thru passive joint

How to implement such a joint? (see picture) http://s29.postimg.org/ccwuob5w7/Screen_Shot_2014_02_06_at_10_05_50.png It is a passive joint but with two links attached on opposite sides. I tried several variants, but the links always fall off when moving away from the standard configuration 1 link ->...
by fferri
17 Oct 2013, 14:59
Forum: General questions
Topic: compass (magnetic) sensor
Replies: 2
Views: 6776

Re: compass (magnetic) sensor

here is the simple magnetic sensor.

it requires setting the magnetic vector for the current geographic location (default: {0,1,0})

http://dfiles.eu/files/m7mnv5kiu