Alt-BEAM Archive
Message #11818
To: beam@sgiblab.sgi.com
From: Richard Piotter richfile@rconnect.com
Date: Tue, 14 Mar 2000 16:19:05 -0600
Subject: [alt-beam] Re: portescap
Can they be ordered online, and where?
Darrell Johnson wrote:
>
> Well, I know for a fact that the "Type B" motors are
> about the best you'll ever find for doing rover-type
> bots like bicore photovores and beamants. They are
> extremely eifficient. The motor will run directly off
> a 24x33 solarpanel under a 60 watt bulb from a foot
> away. This makes full time solar power possible..
> So... get em while you can.
>
> darrell
>
> --- Laura Malinowski Laura/Rob Malinowski
> wrote:
> > Called to order a few a couple motors yesterday.
> > They had type A's and
> > type B's in stock. Less than a hundred of each. The
> > type A is a smaller
> > package and cost $22 each. The type B was 2 for $27
> > or 10 for $125 or
> > $15 a piece. The phone # and website were in my last
> > e-mail so I won't
> > go through that again. I am getting two of each type
> > and will let you
> > all know what the quality is when I hook them to a
> > bread boarded walker
> > circuit.
> > Rob M.
> >
> >
>
> =====
> ____________________________________
> BICOREEOS... They're BEAMtastic!!
> http://www.geocities.com/beamtastic/
> __________________________________________________
> Do You Yahoo!?
> Talk to your friends online with Yahoo! Messenger.
> http://im.yahoo.com
--
Richard Piotter The Richfiles Robotics & TI web page:
richfile@rconnect.com http://richfiles.calc.org
-- Make Money by Simply Surfing the Net or responding to E-Mail!!!
-- Click below!!!
http://www.alladvantage.com/go.asp?refid=ATL147
http://www.spedia.net/cgi-bin/dir/tz.cgi?run=show_svc&fl=8&vid=329630
11819 Tuesday, March 14, 2000 7:50 PM Re: H-Bridge beam@sgiblab.sgi.com Dave Hrynkiw
>At 09:53 PM 3/13/00 , Andrew Hooper wrote:
>>I have been looking at several H-Bridge circuts (as the Zetex chip is not
>>readily avalible over here)
>>and found that there is a 6 transistor and a 4 transistor version, both
seem
>>to be no smoke.
>>
>>What are the bonuses or drawbacks of using these?
>
>
>Little if no drawbacks. Although the Zetex chip is a tidy package, don't
>let that keep you from trying your own "free-hand" H-bridge. beam-online
>has a bit of a layout to get you started. And I FULLY recommend you use
>2n2222 for 3904's and 2907 for 3906's, as once (quite forcefully and
>accurately!) pointed out by Steven Bolt. Much better, for pennies more a
>transistor.
>
>Regards,
>Dave
>
>---------------------------------------------------------------
>"Um, no - that's H,R,Y,N,K,I,W. No, not K,I,U,U, K,I,_W_. Yes,
>that's right. Yes, I know it looks like "HOCKYRINK." Yup, only
> 2 vowels. Pronounciation? _SMITH_".
> http://www.solarbotics.com
Home