Alt-BEAM Archive
Message #13809
To: beam@sgiblab.sgi.com
From: Bernard Nazari Bernard.Nazari@jpl.nasa.gov
Date: Fri, 21 Apr 2000 14:35:05 -0700
Subject: RE: My Poor Walker (Its kicking its legs around like a wild....)
Wilf,
So would your multi diode PNC work or should I use something like
Bruce's PNC where he has a 4 diodes (one of which is inverted) that pulses
for a split second so that it starts off on the right gait? I'm sure his
explanation will be much better than this one, but I think you know what
I'm talking about. Anyway, I think I need to buy more servos...Hehehe
Bernie
> Hi Bernie,
> >
> > If you already have a microcore then a "retail state servo" PWM controller
> > can be added like this. This design is not yet tested but barring some
> > component value changes, it should work. You'll also need some sort of PNC
> > for the microcore. Note the diode logic required for CW, CCW, and hold.
> > This circuit can be simplified and I am curious to see how turning and
> > reversing will evolve from this idea.
> >
> > regards
> >
> > wilf
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13810 Fri, 21 Apr 2000 19:32:54 -0400 Re: Wheels beam@sgiblab.sgi.com databasement@conninc.com Du-Bro has just what you want, Check the R/C (radio control) aircraft section of your local hobby shop. They make solid and pnuematic tires.
Aircraft parts make great 'bot parts.
jester96beam@iname.com wrote:
> Does anyone have any good wheels they'd be willing to sell? I need 4 good wheels/tires kinda like the rear wheels on RC buggies. I'm making a (mars) rover and I need wheels. About 2 inch in diametre or larger will be great, and they should have treads of some sort. They don't have to be from and RC car!! that's just an example.
>
> Anyway please e-mail me at jester96@iname.com if you have any, and include a picture if you can.
>
> Thanks
>
> Chris
>
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