[ros-users] manipulation stack problems

Ugo Cupcic ugo at shadowrobot.com
Thu Feb 3 16:25:38 UTC 2011


Hi all,

I'm still trying to get the manipulation stack to work with our arm and hand
and I ran into some problem:

As you can see here, A path from pregrasp to grasp is found:
http://img267.imageshack.us/img267/199/rviz013.png

But:
 > the path seems to be the wrong way around: the first markers are at the
bottom, instead of at the top.
 > when moving the arm, the arm moves maybe 5cm below the markers (on the
screenshot, it's at position 0 which should be pregrasp).

The values I put in the database are:
grasp_pregrasp_position =
"{0,0,0.281533,0.707106781186548,0.707106781186548,0,0}"
grasp_grasp_position =
"{0,0,0.213018,0.707106781186548,0.707106781186548,0,0}"

Any help greatly appreciated.

Cheers,

Ugo

-- 
Ugo Cupcic | Shadow Robot Company | ugo at shadowrobot.com
Software Engineer | 251 Liverpool Road |
need a Hand? | London N1 1LX | +44 20 7700 2487
http://www.shadowrobot.com/hand/ @shadowrobot
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