Subject:
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RE: expansion board - servo control
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 23 Dec 1998 06:55:27 GMT
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Original-From:
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Mike Jones <michaelj@/AntiSpam/wt.net>
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Reply-To:
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michaelj@wt.netSTOPSPAM
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Viewed:
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1317 times
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I also saw a similar problem while experimenting with an Atmel microcontroller
and a Futuba servo. My problem ended up being that I had forgotten to have a
common ground between the controller and the servo. Once I connected the grounds
everything worked like a charm.
Mike
> I've had a similar problem, make sure your servo power is fully charged. An
> undercharged system will sometimes drive all the way one way.
>
> Mike Ross
>
> ----------
> From:
> shsc9801@condor.stcloudstate.edu[SMTP:shsc9801@condor.stcloudstate.edu]
> Sent: Wednesday, December 23, 1998 8:04 AM
> To: handyboard@media.mit.edu
> Subject: expansion board - servo control
>
> Hello,
>
> I emailed this to the handy board list and got one response. I am
> mailing
> it back hoping that I can get some more responses from those on the
> list
> and perhaps fred.
>
> > Hi,
> >
> > I stopped working with the handyboard for a while but just started • back up
> > again. I put the expansion board onto my handyboard and began • testing it.
> > After testing the general tests done before with just the • handyboard I
> > started testing the servo ports.
> >
> > I am having some trouble with controlling the ports though. When I • enter
> > init_expbd_servos(int action); from the computer via IC, the motor • turns
> > completely clockwise. It does not matter what my integer is as • long as it
> > is not zero. I am not sure what the action variable should be in • any case.
> > I also am unable to change the direction of the servo no matter • what action
> > value is given or what value I give servo0, the port that the motor • is
> > plugged into.
> >
> > Can anyone give me any suggestions as to how to control the servo?
> >
> > Thanks,
> >
> > Scott Sherman
> > shsc9801@condor.stcloudstate.edu
> > ACS
> > SCSU
>
>
>
>
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