Alt-BEAM Archive
Message #06191
To: beam@sgiblab.sgi.com
From: Craig Maynard cybug@home.com
Date: Sun, 26 Sep 1999 20:00:08 -0600
Subject: [alt-beam] Re: Cy-Popper...
Nice job, Richard! Glad the boards worked out for you. There's more
where that came from!
Craig
> Richard Caudle wrote:
>
> ----------------------------------------------------------------------
>
> Good Morrow All,
>
> I finished another popper tonight. I made it from the Chloroplast
> boards that Craig M. was kind enough to send me. The pix of the 'bot
> are going to be taken in the morning. I think you'll dig it!
> Forgive me for the long download times on the MyBots page. This
> weekend, I plan to fix that, so bear with me!
>
> Richard Caudle
> www.geocities.com/frankendaddy/BEAM.html
> ----------------------------------------------------------------------
> Guardians of the sacred words: Nee, Ptang, and NeeWhon!
6192 Mon, 27 Sep 1999 00:07:28 -0500 [alt-beam] Re: memory chips beam@sgiblab.sgi.com Richard Piotter That's the chip used in the TI-85/86/92 Extender II. I got mine as
samples, but i forgot where they were from. You won't find them under
the listed samples, you have to e-mail and make a request for them. They
were even kind enough to send the 1 meg version too!
My recomendation is to go to http://www.calamistrum.com/visualdesign/e2/
They build EIIs there, and have info on purchasing parts incase you want
to build your own. since they use the exact chip you asked for, you will
probably be able to buy them from there.
Good luck!
Tai Heng wrote:
>
> Does anyone know a suitable substitute or replacement
> for a AT45D041JC memory chip? anything out of the
> digikey catalogue that could replace this chip? I
> don't care about the capacity just if it's compatable.
> Thanks.
>
> __________________________________________________
> Do You Yahoo!?
> Bid and sell for free at http://auctions.yahoo.com
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
6193 Mon, 27 Sep 1999 06:09:50 -0700 (PDT) [alt-beam] Re: memory chips beam@sgiblab.sgi.com Tai Heng Actually, I'm just looking for something similar
because I really don't like ordering parts from the
US.
--- Richard Piotter wrote:
> That's the chip used in the TI-85/86/92 Extender II.
> I got mine as
> samples, but i forgot where they were from. You
> won't find them under
> the listed samples, you have to e-mail and make a
> request for them. They
> were even kind enough to send the 1 meg version too!
>
> My recomendation is to go to
> http://www.calamistrum.com/visualdesign/e2/
>
> They build EIIs there, and have info on purchasing
> parts incase you want
> to build your own. since they use the exact chip you
> asked for, you will
> probably be able to buy them from there.
>
> Good luck!
>
>
> Tai Heng wrote:
> >
> > Does anyone know a suitable substitute or
> replacement
> > for a AT45D041JC memory chip? anything out of the
> > digikey catalogue that could replace this chip? I
> > don't care about the capacity just if it's
> compatable.
> > Thanks.
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Bid and sell for free at http://auctions.yahoo.com
>
> --
>
>
> Richard Piotter
> richfile@rconnect.com
>
> The Richfiles Robotics & TI web page:
> http://richfiles.calc.org
>
> For the BEAM Robotics list:
> BEAM Robotics Tek FAQ
> http://people.ne.mediaone.net/bushbo/beam/FAQ.html
>
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com
6194 Mon, 27 Sep 1999 08:55:58 -0500 [alt-beam] master/slave bicore walker problems "Beam" "Phillip A. Ryals" I'm new, so please forgive my ignorance...
I put together the master/slave bicore circuit (Using a 74HCT240)on
beam-online. I have the motor leads running into a 74HCT245 to bump up the
signal, and it's driving two R/C servos.
When I turn it on, the bot will take two or three steps ok, then the back
legs will turn about 30 degrees too far. In no time it's on it's side and
helpless.
Being my first walker, I'm lost. I tried putting in some mechanical stops,
and they would just paralyze the thing. I read that the 74HCT's don't do so
well in the feedback area. Could that be the problem? The HCT's are all I
could find, so I'd like to make them work.
I also tried changing various resistors, but I couldn't do much more than
speed it up or slow it down.
Please, impart your endless knowledge. I need to learn!
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