TI-H: Re: Laser Network (OT)
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TI-H: Re: Laser Network (OT)
it'd be kinda amusing, yeah, and it would work if you had the inclination.
it would work like the IR serial ports most laptops already have; but if you
can already -see- the other computer, then the cable you string out between
them ought to be secure already, no? ;)
y'know what would be really really cool, is changing the IR port on a laptop
to work with a laser; it would be VERY simple to do, and highly amusing.
change the LED in there to a laser diode, use a transistor to switch the
larger current the LED demands, and pow.
a laser Ethernet would probably be a mite slower than fiber, and if you ran
a hub then all the computers would have to be able to -see- the hub, which
could get interesting.
and if i wanted to make it insecure, i'd pass a semisilvered mirror in the
way of the beam, or semisilver one of the existing mirrors with a bias on
the forward signal.
or i could just tap the transciever at the hub.
it'd still be wicked cool, though, i agree ;)
ohohohoh hey, lookie what i found -- go to www.conversant.com & click on the
banner thing for PAV Data Systems.
now THAT's amusing.
and they're right here in boston, too! neat-o.
--nick
Nick Foster / Bistromath / zaphod@coe.neu.edu
KeyID 2048/1024 0x663CB446
6CAF FFD4 F9BA 64BA ECF9 032E 7402 3886 663C B446
----- Original Message -----
From: "Giles Pollock" <glp71s@mailandnews.com>
To: <ti-hardware@lists.ticalc.org>
Sent: Monday, March 27, 2000 6:14 AM
Subject: TI-H: Laser Network (OT)
>
> I had an idea earlier today, to make a secure and wireless network...
> You could use a 10BaseF tranciever (the ones that have two fiber
> connections, i take it that one is transmit and one recieve) and replace
> the transmitter with a laser diode (maybe extra circuitry) and use a
> different reciever. With a few mirrors you could focus the laser beam
> into a reciever (say a photodiode...) and it wouldnt require much to
> make an aiming device, if the entire arrangement was bolted to something
> secure, say a window sill or something. I have a rough idea on how you
> could make an automatic aiming device using another mirror and another
> laser with a few photodiodes and small servos. The laser would be
> completely secure, it would be almost impossible to infiltrate the beam.
> The only disadvantage would be that it would be rather expensive...
> anyone got any other ideas?
>
>
>
>
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