Subject:
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Re: hexipod walker
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 7 Feb 2000 19:27:06 GMT
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Original-From:
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Chen Yung Hsu <HSU3@COOPER.avoidspamEDU>
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Viewed:
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1579 times
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where would i get a SSC?
On Fri, 4 Feb 2000, Adam Oliver wrote:
> Personally I use a Scott Edwards Serial Servo Controller (model 1, there is
> a new one out now) - SSC.
> On the handyboard web site is a program to control this serial device from
> the handyboard, which means you can just set each leg position and let the
> other board do the work. CUts down on processing time and hassles. I use 2
> of them daisy-chained together to control 12 servos for my hexapod walker
> check out http://www.wantree.com.au/~oli for more info if u like..
>
> hope this helps
> Adam
>
>
>
> > COOL! How do you control 8 servos? I have the expansion board and there
> > are only 6 servo connections there. What other port did you use to • control
> > the other 2 servo? Or do you use the expansion board at all? I am • looking
> > for a way to add two more servo to my robot, instead of using to motor • with
> > sensor control.
> >
> > --
> >
> > Ray
> >
> > Thomas Hauri <handyboard@media.mit.edu> wrote in message
> > news:3695F792.7460E88E@zhwin.ch...
> > Timing 12 servos with the HB could be done. So far we are using 8 servos
> > which don't use much cpu resources at all. But 1 compare output can only
> > time 8 servos because of the servos timing requierments without using a • lot
> > of cpu time. So a second compare output must be used for the other 4 • servos.
> > But using a clever algorithm timing 12 servos could be done.
> > The biggest problem is to get all the contol algorithms to run for 12 • servos
> > (12 axes) in realtime.
> > It could be done using multiple handyboards.
> >
> > I'm very interested in your project, so please keep posting ideas and
> > information about your WALKER.
> >
> >
> > > I believe the best thing to do is use separte controlers (e.g. PICs) to
> > > control the specific motions of the servo's. This will allow you to have
> > > more control over the HB. There are several places on the web (e.g.
> > > http://www.brouhaha.com/~eric/pic/ where you can find info on PIC's
> > > including having them control servo's. I think the timing constraints on
> > > 12 servo's will heavily tax the HB resources.
> > >
> > > Ronald Wijngaarde
> > >
> > > > ----------
> > > > From: r.farnhill@bssl.co.uk[SMTP:r.farnhill@bssl.co.uk]
> > > > Sent: vrijdag 8 januari 1999 11:30
> > > > To: handyboard@media.mit.edu
> > > > Subject: hexipod walker
> > > >
> > > > Hi all
> > > >
> > > > Iam thinking about making a six legged walking robot using servos and
> > > > wondered if anybody has already built one.
> > > > I want to use two servos per leg one for lifting and another for the
> > > > sweeping action so giving 12 in total. One thing i want to know is how
> > > > do
> > > > you control twelve servos? i have seen some serial servo controllers
> > > > that
> > > > control upto 256, is it possible to control them with just the
> > > > handyboard.
> > > > also does the HB have enough proccessing power to control all these
> > > > servos
> > > > and still have enough spare for obstical avoidance etc.
> > > >
> > > >
> > > >
> > > > Any thoughts, tips etc.
> > > >
> > > > Thanks Russ....
> >
> >
>
>
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Message has 1 Reply:
Message is in Reply To:
 | | Re: hexipod walker
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| Personally I use a Scott Edwards Serial Servo Controller (model 1, there is a new one out now) - SSC. On the handyboard web site is a program to control this serial device from the handyboard, which means you can just set each leg position and let (...) (25 years ago, 4-Feb-00, to lugnet.robotics.handyboard)
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