Alt-BEAM Archive
Message #10706
To: beam@sgiblab.sgi.com
From: "Timothy Flytch" flytch@hotmail.com
Date: Tue, 22 Feb 2000 16:18:23 PST
Subject: [alt-beam] Re: The more likely end: Bio-robots.BEAM: Tendency toward miniaturization
>? The future is a mix of man and
>machine. In this lifetime I will be able to surf the internet while I sleep
>and visit distant places through recorded and replayed vision, directly
>into
>the brain stem. Eventually, we will be machines. Surprised? You shouldn't
>be. It's evolution baby.
>
>
>dennison
>
> > >
There was a collage in the midwest that the students formed a borg club...
they took pc's and built them into back packs with a wearable keyboard and a
floating screen over one eye... there arguments were that given their
vocation this type of equipment would be standard... So they won the right
to use them in all their classes...
the borg are already hear... :)
Timothy...
I read this in a magazine and I have searched the web but can't find
anything more on this??? dose anyone ells have a url???
______________________________________________________
10707 Tue, 22 Feb 2000 19:47:12 EST [alt-beam] Re: FYI: ANN: fire-fighting robot contest at Penn State (3-25) beam@sgiblab.sgi.com CIRCITZ@aol.com ok, I thought that was for an upcoming contest...but I'll check back to see
what it says
dan
<< it's like the last thing mentioned on the rules page >>
10708 Tue, 22 Feb 2000 20:21:43 -0500 [alt-beam] Re: Batteries beam@sgiblab.sgi.com Bob Shannon Seamus Allan wrote:
> Hello to all...
>
> I just got given the inside of a Startak cellphone (I was looking for the
> vibrtor motor), when I found the battery. It is a 3.6V Lithium Ion
> Rechargeable battery. I am unsure of its current capacity, and was wondering
> if it would be any good for anything, and if so, can I charge it in the same
> way as a NiCd or NiMH???
>
> Any help would be appreciated,
>
> Seamus Allan
>
> seamus_allan@inet.net.nz
Li-Ion batteries are the best commercial battery available for small robots,
but...
The charging process is very critical. You need to use a specialized charge
control
chip to switch between constant current and constant voltage modes based on the
cells
charge state.
If this is not accurate to within 1%, the battery will fail, usually imediately.
When a Li-Ion battery fails, it can explode. A standard 18650 Li-Ion cell has
about the same explosive yeild as a thinble full of gasoline.
(an 18650 cell is 18 mm in diameter, and 65 mm long, with a voltage near to 4
volts, at perhaps 2,000 ma/h!)
Home