Re: [PlayerStage-Gazebo] Robot + arm

[Nate K. <nat...@gm...>]

I have added comments below.

On Wed, 07 Jul 2004 18:47:44 +0200, Daniel Poza Zamarr=F3n
<dan...@ho...> wrote:
> Hello, I have been working with my conflictive-joined arm. I am trying to
> attach it to my robot (I have two models: a Robot and the arm). All the
> components of my arm have gravity mode =3D 0 (**); But my robot have a no=
rmal
> gravity mode (I have not touched it).
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> I have founded many problems:
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> 1. Althought I attach both models in the xml world file, my arm separate
> from my robot.

The <xyz> parameter of your arm (which is a child of the main robot I
assume) is relative to the parent. You may have set the <xyz> of the
arm incorrectly.

> 2. With the arm attached, my robot falls! I don't understand that, becaus=
e I
> have set up  all the arm components to mass =3D 0;

Have you disabled all the bodies in your arm? body->Enable(false)

> 3. I have many segmentation faults when I try to move the arm initial
> position just for a few cms..without visible reasons..

Any more information on this one? A backtrace? Do you see a bunch of ODE er=
rors?

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> (**) I set up my arm components to gravity 0 because I wanted to take car=
e
> only about the kinematics.. with normal gravity my arm joins fall down an=
d I
> can't make it stay quite in a possition.
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> Can you help me? Do you have any suggestion?
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> Thank you,
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> -DANIEL POZA-
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> _________________________________________________________________
> =BFEst=E1s pensando en cambiar de coche? Todas los modelos de serie y ext=
ras en
> MSN Motor. http://motor.msn.es/researchcentre/
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