Alt-BEAM Archive

Message #06811



To: beam@sgiblab.sgi.com
From: Evan Dudzik evandude@yahoo.com
Date: Sun, 17 Oct 1999 06:58:22 -0700 (PDT)
Subject: [alt-beam] Re: okay, lets try this one more time! (was: check out photovore online!)


sorry bout that, netscape composer was acting up!

--- Rik wrote:
> most of the graphics are missing in the tutorial for
> the free form
> photopopper
>
> -Rik
>
>

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6812 Sun, 17 Oct 1999 10:33:59 -0400 (EDT) [alt-beam] Re: Ian's PCB designs beam@sgiblab.sgi.com jester96beam@iname.com
Just print it out once (even on a crappy printer) then look at the back holding it up to light. If it's the same as on Ian's pages, then print it out normally. If not, then just mirror it first, then print it with the laser.

As far as etching time goes, it depends on how concentrated your acid solution is. Generally it takes about 10 minutes, but you can tell when it's done because all the copper that's NOT covered (will be the white part of the image) is all eaten away.

Chris

---- you wrote:
> Ok. I see some of you do not understand me. What I mean by edit is that do I need to mirror it? by that I mean take the image and flip it around so that I can take it up to a mirror and it will look normal, because when you flip something over like a stamp it goes on normal but when you look at the actual rubber it's letters are backwards. I am makeing this into a stamp because I'm using the iron-on method.
>
> When I etch this will the black part be the part that the electricity flows through or is it the white part? Does the the white part get totally etched away or something? (Ive never made a PCB). Thanks for the help.
>
> On Sat, 16 Oct 99 18:56:03 -0600 Ian Bernstein wrote:
> >>About Ian's PCB designs, are they ready to just print out and iron on or
> >>do I have to edit them? I need to know cause I'm going to print them all
> >>out at school and photocopy them a few times, and they get mad when you
> >>waste their toner.
> >Like it says at the top of the page. Make sure after you print it out =
> >that it's 1.443" wide (they're all the same). If it is then it's the =
> >right size.
> >
> >Laterz
> >
> >--------
> >There is only one true "SyNeT"
> >BEAM Online - http://www.beam-online.com
> >
> > =
> >+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> >=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> >=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
> > | DISCLAIMER: The above expressed views are not necessarily |
> > | that of the author. In fact, he disclaims all knowledge of |
> > | his statements and rebutes his own stated beliefs. That said, |
> > | his recommendation: "Take my words to heart." =
> >=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 |
> > =
> >+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> >=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> >=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+
> >
> >
>
> Win a LAPTOP Computer and get your FREE E-mail Account at http://mail.chek.com
>


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6813 Sat, 16 Oct 1999 21:26:37 -0500 [alt-beam] Re: Radio Communications? "Phillip A. Ryals" Forgive me for saying so, but a lot of the behaviors everyone is describing
would take a LOT more than the Nv side of things seem like they could
handle. What I mean is, BEAM is basically about responding to stimuli with
a response that appears more like a reflex than anything. Indeed, AFAIK,
that's what they're supposed to do. :)

But when it comes to customizing behaviors that rely, or are at least
augmented by other behaviors...

Specifically, radio. You need three receivers in order to find the exact
location of the originating signal. Three robots with receivers, that can
talk to one another? But then, they would each need to know the other's
position relative to their own, otherwise the triangulation done would be
completely unreliable.

And then sound. Echolocation? Two "ears" could give it a general
direction, but what if it centered on an echo on the wall instead of the
actual generator? And how would you set up an analog circuit to capture two
signals, and then compare the time in between reception?

Finally IR. How does the originator know where to point it's signal? How
does the receiver know where the signal is coming from in order to point his
receiver in the right direction?


Maybe I'm just missing a key point? Please, someone correct me if I'm
wrong.

I mean, it DOES seem like all these things are possible. But I don't think
I would want to buy all the breadboard for it. :)

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