11256 [alt-beam] Re: Photovore Field of Vision

Alt-BEAM Archive

Message #11256

To: beam@sgiblab.sgi.com
From: Bruce Robinson Bruce_Robinson@telus.net
Date: Wed, 01 Mar 2000 21:58:52 -0800
Subject: [alt-beam] Re: Photovore Field of Vision

Flaming Headphones wrote:
>
> ... In a photovore, about how much should the field of
> vision overlap (if any)?

Hi, Mike. If you want good phototropic response (turn toward/away from
light), what you really need to do is:

a) make sure overhead light doesn't shine directly on the
photodiodes (it often overwhelms them).
b) turn them so they are not pointing parallel to each other. This
will make your robot lock onto a bright light source more easily.

For a photovore where you are trying to power your robot from the
light, you want the maximum light shining on your collectors; this
usually means NOT sheilding them from overhead light.

Bruce

11257 Thu, 02 Mar 2000 00:19:39 -0600 [alt-beam] Hard to find 4 conductor connector BEAM , Twin Cities Robotics Group Richard Piotter Hello. I'm sending this as a general request. If anyone knows any info
on these (or if they even exist), I'd like to know. The female connector
does exist, cause there's one in my Macintosh, but I don't know about
the male connector. I've been sending e-mails and forms to places around
the net, asking for info, so I'll just copy the info I sent out to those
companys to the lists. Hope someone can help!

Product 1

1/8 inch diameter
3/4 inch long
Male "earphone" style plug
4 conductor
(ring|ring|ring|tip)
Stereo version of mono microphone connector found in all Plaintalk
microphones for Apple Macintosh computers. Includes the 3 standard
contacts of a standard audio jack, but also has a 4th conductor that
provides power for the circuitry in the apple microphone.

Product 2

A female 4 conductor microphone jack that accepts both standard stereo
and mono "earphone" style male plugs, as well as the rarer 3/4 inch
long, 1/8 inch diameter 3 (or 4?) conductor mono male jacks used with
Apple Macintosh Plaintalk Microphones.

The products I am seeking are audio plugs, _SIMILAR_ to earphone style
plugs, but _LONGER_. A standard earphone style plug is 1/8 inch in
diameter, and 1/2 inch long. They come in 2 and 3 conductor versions for
mono and stereo.

The products I need are different. They too are 1/8 inch in diameter.
The female socket accepts standard earphone size jacks (1/8Dx1/2L), but
it also accepts another, longer connector that is 3/4 inch long. Apple
microphones are powered devices. They need a pin on the connector to
provide electricity for the circuitry. In order to make the connector
compatible with other audio sources, and not blow anything, they use a
longer plug, and use an extended tip to draw power. Apple's microphone
is only 3 conductors. the two audio chanels are tied into a mono input,
but I need a Stereo input, that also provides power. As a result, I am
in need of a 4 conductor jack that provides Ground, the TWO stereo audio
lines, as well as the power supply. I need a male and female connector.
All the female connectors are 4 conductors. The male jacks I've ever
seen are all 3 conductors, since that's all their microphones require,
being mono. Typicaly, stereo inputs are line level, from other devices,
and rarely require the power connector. Again, only 3 conductor, but
standard short connector. I am not certain if the product(s) I am in
need of even exist, or at least are even avaliable, but I need to ask. I
need to create an AV switching console, however, I need the Apple mic to
plug into an Apple 3/4 inch long 1/8 inch diameter 4 conductor female
jack (which can be salvaged off a damaged Macintosh logic board if I
become desparate), and also have RCA and standard 1/2"x1/8" audio in,
but the cable leading to the computer must be 4 conductor. It's the only
way this will work. I need the 3 conductors for ground and the two
stereo lines for the RCA and 1/2"x1/8" jacks, but I also need the power
pin that is only accessible via the long 3/4 inch jack. The only option
is a 4 conductor 3/4 inch 1/8 inch diameter male audio jack.

I hope you can help in finding what I need!
--

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

11258 Thursday, March 02, 2000 7:09 PM Re: WARNING hacker are everywere... beam@sgiblab.sgi.com David Perry
>no your right - this is a case of cracking - i'm sure someone went to the
>trouble of breaking in to delete this - this was probably done by some
moron
>little kid who downloaded a little program somewhere, it could even just be
>the fault of the user - people, especially newbies who always jump to the
>conclusion "oh my god-someone hacked into my computer!".
>And MacOS is very secure - in the crack-a-mac competition a while ago an
>Australian won by exploiting a plug-in.
>
>David
>
>----- Original Message -----
>From: "Phillip A. Ryals"
>To:
>Sent: Thursday, 2 March 2000 10:20
>Subject: RE: WARNING hacker are everywere...
>
>
>> Just remember..
>>
>> This is a tale of *cracking*, not hacking. They're two completely
>different
>> mindsets, and it's best to keep them seperate when you refer to them. I
>> hate to be technical, but I guess it strikes a bad chord with me. :)
>>
>> One other thing, this really doesn't even look like a case of cracking.
>> They mention that they're connected to two phone lines, but that doesn't
>> make any difference. If the modems aren't set to auto-answer (and most
>> aren't) then no one can use them as a form of entry. The only choice
then
>> would be to hit the computer when it's online. The problem there is, the
>> MacOS is inherently VERY secure. It's this way because you can't hack or
>> crack it with a text console. The text console is the main medium for
>> hackers/crackers to use because most are running some variant of UNIX.
>>
>> >> My (Main Drive) disappeared from the my desk top and had to be re-
>> >>configured... So it was able to be re-read but when recovered there was
>> >>not a Meg of data left on either of my 2 x 6 Meg drives.
>>
>> Instead, it sounds as if they had a hard drive problem. It went down,
and
>> as soon as they got it back it was blank? First of all, it sounds like
>the
>> data got wiped when the drive was "re-configured." And since they
>referred
>> to their drives as 2 x 6 Meg, I imagine they wouldn't realize this.
>>
>>
>> I'm not saying that it isn't a crack, it just doesn't seem likely in
their
>> situation.
>>
>>
>> Sorry for the offtopic rant everyone...
>>
>>
>>
>>
>> -----Original Message-----
>> From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
>> Behalf Of Timothy Flytch
>> Sent: Wednesday, March 01, 2000 12:29 PM
>> To: beam@sgiblab.sgi.com; freenrg-l@eskimo.com
>> Subject: Fw: WARNING hacker are everywere...
>>
>>
>> I got this today... and thought with the resent hackings this was
>pertinent
>> to send on...
>> I hope you will quickly read it before deleting...
>>
>> Timothy...
>>
>>
>> >>From: "Karen Lyster"
>> >>Reply-To: "UFO Scotland"
>> >>To: "2reality" <2reality@fpnet.co.nz>
>> >>Subject: [UFOscotland] Fw: WARNING To all Computer Owners & Publishing
>> >>Businesses
>> >>Date: Wed, 3 Nov 1999 18:53:45 +1300
>> >>
>> >>UFO Scotland - http://wkweb5.cableinet.co.uk/dledger
>> >>
>> >>WARNING To all Computer Owners & Publishing Businesses
>> >>----- Original Message -----
>> >>From: The Keith Basterfield Network Australasia
>> >>To: Aussiepost@listbot.com ; ;Abduction
>> >>Sent: Wednesday, March 01, 2000 5:15 PM
>> >>Subject: WARNING To all Computer Owners & Publishing Businesses
>> >>
>> >>
>> >>The Keith Basterfield Network Australasia -
>> >>http://www.powerup.com.au/~tkbnetw/new
>> >>
>> >>WARNING To all Computer Owners & Publishing Businesses
>> >>THIS COULD HAPPEN TO YOU
>> >>
>> >>
>> >>We never thought it would happen to our
>> >>Mac G3 Computers
>> >>But it did
>> >>
>> >>
>> >> !We got hacked! and it could happen to you, we lost all our Magazine
>> >>info and all our UFO data off 2 ...Separate Computers Systems ... Each
>> >>computer was hooked up to 2 separate phone lines... Data was kept on
>both
>> >>computers on alternative drives "for protection ha!!! "WRONG"
>> >>
>> >>
>> >> If you have a Any type of computer and you think your safe from
>hackers
>> >>!think again! Your not.
>> >>
>> >>
>> >> We lost 4 years of publishing work in 20 minutes !GONE NOTHING LEFT!
>> >>Robert lost the only typed copy of his UFO book which he had been
>> >>working on for the past 15 years. It was gone in 15 minutes and there
>was
>> >>!Nothing! We could do to stop or save a thing.
>> >>
>> >>
>> >> My (Main Drive) disappeared from the my desk top and had to be re-
>> >>configured... So it was able to be re-read but when recovered there was
>> >>not a Meg of data left on either of my 2 x 6 Meg drives.
>> >>
>> >>
>> >> The same happened to Robert (Second Drive) !Nothing Was Recovered!
>> >>from his 2 x 6 Meg drives. Years of work gone in 20 minutes
>> >>
>> >>
>> >> If your in the publishing business.. the I only advise I can give
you
>> >>is to unplug your computer from any phone connection when your not on
>the
>> >>net. Think about it "WE Recovered Nothing" years of work !GONE even
>> >>being off line is NO protection the only protection is being
>disconnected.
>> >>This is the only safe way to stop these guys.
>> >>
>> >>
>> >> We at Earthlink Publishing have now taken steps so this never
happens
>> >>again. I would recommend if you have taken the time to read this e-mail
>> >>you act know. Never leave your system plugged in it could cost you your
>> >>Business.
>> >>
>> >>
>> >> Due to being hacked The Australasian UFOlogist Magazine & Exposure
>> >>Magazine is running a little behind.
>> >>
>> >>
>> >> To the Hacker "thanks for the lesson" !But you failed!. I had the
>> >>foresight to do a backup text copy of both Magazines I may have had to
>do
>> >>many hours of formating text and re- doing all the layout again but we
>are
>> >>of the printers in the morning :>)
>> >>
>> >>
>> >> To all subscribers we at Earthlink Publishing are so sorry for the
>> >>inconvenience and the magazines will be in the mail soon after.
>> >>
>> >>
>> >>
>> >>
>> >>
>>
>>>-------------------------------------------------------------------------
-
>> ------
>> >>To unsubscribe, write to Aussiepost-unsubscribe@listbot.com
>> >>______________________________________________________________________
>> >>Advertisement:
>> >>Enter to win $1000 at winfreestuff.com!
>> >>What else do you want to win? If you want cash, gourmet foods, palm
>> >>pilots, and other great prizes don't look any further than
>> >>winfreestuff.com! We've got what you want. Check it out at:
>> >>http://www.listbot.com/links/winfreestuff2
>> >>
>> >>
>> >>
>> >>
>> >>______________________________________________________________________
>> >>To unsubscribe, write to UFOscotland-unsubscribe@listbot.com
>> >>______________________________________________________________________
>> >>Advertisement:
>> >>Enter to win $1000 at winfreestuff.com!
>> >>What else do you want to win? If you want cash, gourmet foods, palm
>> >>pilots, and other great prizes don't look any further than
>> >>winfreestuff.com! We've got what you want. Check it out at:
>> >>http://www.listbot.com/links/winfreestuff2
>> >
>>
>> ______________________________________________________
>>

11259 Thu, 2 Mar 2000 07:33:18 -0500 Free solar cells Jim Taylor
> Hey, I just cracked open my eye contact cleaning kit, I guess as a
> promotional thing they are including little credit card sized calculator
in
> their product. They are standard calc cells, only output 1.5 volts or so,
> however they are free (When you buy the product of course) The brand name
> is quick care. It can be found in most grocery stores.
> Just a heads up.
>
> |___|
> -------O()O-------
> James Taylor
> URL: http://fly.to/springmeadows
>
>
>

Home