Georg-

Right off the top of my head, I'm thinking that the problem may be
with pulse. The way the the pioneer works is that if no message is
sent to the controller for 2s, the controller assumes that it has lost
its connection and shuts down. On most pioneers, this is not enabled
by default, however on some, including possible yours, it is. To
remedy this, we send a pulse message (just a blank message really) to
the pioneer every 2s. You can set the driver to do this by setting the
pulse parameter to 1 (right now it is -1). That will force the driver
to send the pulse every 1 second.

Good luck. And let me know if that is not in fact your problem.

-Dave

On Wed, Sep 29, 2010 at 3:48 AM, von Wichert, Georg
<Georg.Wichert@siemens.com> wrote:
> Hi,
>
> We are currently trying to control a P2DX using the p2os stack. The p2os
> node does successfully establish contact the the robot, it is for examlple
> possibel to activate an deactivate the wheel motors using the p2os_dashboard
> of to activate the ultrasonic sensors using the using the use-sonar
> parameter.
>
> The only thing that does not work ist to actually drive. If we send a twist
> message with linarar.x=0.2 and angular.z = 0.0 and all other fields set to
> zero as well, nothing happens. We tried to release the drives using the
> dash-board and/or the white button, but without any effect.
>
> Does anyone have a hint?
>
> Thanks in advance,
>
> Georg Wichert
>
>
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