Alt-BEAM Archive

Message #08256



To: beam@sgiblab.sgi.com
From: JVernonM@aol.com
Date: Tue, 14 Dec 1999 00:10:31 EST
Subject: [alt-beam] Re: Batteries


In a message dated 12/14/99 12:03:22 AM Eastern Standard Time,
aubois@trail.com writes:

> Ooh aah! Someone actually using the name I came up with for
> something!
So, do you think the idea would work or are you gonna just sit over there and
grin :)?

See ya,
Jim
http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
ICQ# 55657870



8257 Mon, 13 Dec 1999 22:06:19 PST [alt-beam] Re: Batteries beam@sgiblab.sgi.com "Timothy Flytcher" Sounds good Jim,
I have another thought ... use the solar cell/array to directly charge the
Nicad pack and then the Nicads feed the cap though a resister to slow the
firing down... If a bot fires every 20seconds in full sun then limit it too
35-40 seconds ... End result would be a bot that only slow down at night but
never stops :)
Timothy...
>Well, I was thinking of using a Pockmark, that is, a cap hooked in parallel
>with the solar cell (that's the Pockmark) and this hooked to a NiCad via a
>diode to protect the solar cell and the Nicad hooked to the power inputs of
>the core. A large solar array of at least 6 volts @ say 50-100ma (perhaps
>two
>of the 33x66cells from Solarbotics). The cap gives you a delayed response
>to
>changes in light level. Or, you hook the Pockmark to the core directly
>(which
>on Scarlet works fine, although I haven't let it run for extended periods)
>and then hook a D1 or some other dark activated circuit to a separate cell
>to
>charge the NiCad pack for shady and darker conditions. In bright sun the
>bot
>runs directly off of the solar cell. The cap gives a cushion for small
>shady
>spots, and in darker conditions the bot switches to the D1 power supply and
>the NiCads. With the way the Unicore slows to a crawl in dark conditions a
>bot configured this way could well run indefinitely light or dark. Or am I
>missing some fundamental law of physics or something?
>

______________________________________________________



8258 Tue, 14 Dec 1999 02:57:02 -0800 (PST) [alt-beam] Re: chloroplast beam@sgiblab.sgi.com Lee Golden One warning regarding Active components... know your
part numbers very well. I accidentally ordered some
SMT parts from them a while back, and when I called
with the mistake they said "It's not worth our while
to take orders under $25.00 back". There are no
detailed part descriptions on their web site, so be
careful!

I've had no trouble from Digikey in this regard,
although they don't carry all the parts needed for the
Chloroplast.

Richard Caudle mentioned that he ordered from Newark
Electronics (http://www.newark.com).

Lee Golden

--- Maynard wrote:
> I get mine from Active Components / Future
> Electronics
>
> Craig
>
>
>
> ----- Original Message -----
> From: johannes urke
> To:
> Sent: Sunday, December 12, 1999 5:02 AM
> Subject: Re: chloroplast
>
>
> > whaere do you get the parts to make a chloroplast?
> >
> >
> > >From: "Mike Kulesza"
> > >Reply-To: beam@sgiblab.sgi.com
> > >To: beam@sgiblab.sgi.com
> > >Subject: chloroplast
> > >Date: Sun, 12 Dec 1999 01:17:24 GMT
> > >
> > >So i need to make magbot as a gift for
> christmas... To make it using the
> > >chloropast SE, all i do is connect the coils to
> where the motors go, and
> > >put
> > >the magnets in? Are there any precautions with
> respect to a chloroplast
> > >magbot? How fast would it take to charge with a
> 2422 cell, 2200 uF cap,
> at
> > >1300 hrs on a clear day in the sun?
> > >
> >
>
>______________________________________________________
> > >Get Your Private, Free Email at
> http://www.hotmail.com
> >
> >
>
______________________________________________________
> >


8259 Tue, 14 Dec 1999 07:58:41 -0600 [alt-beam] Re: Batteries "Beam@Sgiblab. Sgi. Com" "Phillip A. Ryals"
content-transfer-encoding: 7bit

Just wondering... anyone messed with Zinc-Air batteries? According to what
I've read, they can be 40% lighter because they don't have to carry the
oxygen with them.

I ordered one through work.. 8.4V. It comes in a vacuum sealed pouch with
the instructions "Do not open bag until battery is required for use."

But from what I've read, they're supposed to be a lot longer lasting. I
know it's breaking off from the recharging thread, but thought it might
interest some..


content-transfer-encoding: quoted-printable



>

use." 

class=3D190365313-14121999> 

But from =
what I've =

read, they're supposed to be a lot longer lasting.  I know it's breaki=
ng =

off from the recharging thread, but thought it might interest =

some..




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