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'[EE]: clever LED?'
2003\02\05@044552 by Alan B. Pearce

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Has anyone come across these? Looks like they could make for some clever
message displays and the like with some thought in how to drive them. One of
my colleagues came across the data sheet.



http://www.yoldal.com/YT-FS6N30N%20pdf.pdf
<http://www.yoldal.com/YT-FS6N30N%20pdf.pdf>

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2003\02\05@051458 by Daniel Imfeld

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They're not widely available it seems, but at
http://www.led-lights.co.uk/led-rgb.htm you can get 100 for 300 pounds, which is
about $500 USD.  Single unit price is 3.44 pounds, around $5.67 USD.  I
believe there are other full spectrum RGB LEDs available from other
companies though.

{Original Message removed}

2003\02\05@111651 by R. Michael O'Bannon, Ph.D.

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> They're not widely available it seems, but at
> http://www.led-lights.co.uk/led-rgb.htm you can get 100 for 300
pounds, which is
> about $500 USD.  Single unit price is 3.44 pounds, around
$5.67 USD.  I
> believe there are other full spectrum RGB LEDs available
from other
> companies though.

Is anyone interested in a group purchase of these directly
from the manufacturer?  We could get a substantially better
price that way.

Best regards,
Michael

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2003\02\05@135340 by Dave Tweed

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"R. Michael O'Bannon, Ph.D." <mobspamKILLspamMINDSPRING.COM> wrote:
> > They're not widely available it seems, but at
> > http://www.led-lights.co.uk/led-rgb.htm you can get 100 for 300 pounds, which
> > is about $500 USD.  Single unit price is 3.44 pounds, around $5.67 USD.
> > I believe there are other full spectrum RGB LEDs available from other
> > companies though.
>
> Is anyone interested in a group purchase of these directly
> from the manufacturer?  We could get a substantially better
> price that way.

Has anyone figured out how the heck you actually control a full-spectrum
LED with just two pins? The data sheet doesn't offer any clues.

-- Dave Tweed

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2003\02\05@141245 by Dal Wheeler

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I believe these are probably "cycling" led's that you are looking at...
They blink R.G.B then go into a bloom pattern and reset.  if it's like the
one selling at bgmico.com --LED1081
bgm.bgmicro.com/prodinfo.asp?sid=05461226851851851345023335&prodid=LE
D1081&page=1&cri=led1081&stype=3

The multi's I've seen have 3 legs --'course they could be using some kind of
1-wire scheme ... :')

{Original Message removed}

2003\02\05@141246 by Jon M (Mike) Jones

picon face
I wonder about how to control it as well but after reading
the spec sheet a couple of times I got the idea you ordered
it with a particular light sequence you wanted to see when
power was applied. In other words, no control at all.

Mike Jones

{Original Message removed}

2003\02\05@143925 by Johnathan Corgan

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> Has anyone figured out how the heck you actually control a full-spectrum
> LED with just two pins? The data sheet doesn't offer any clues.

In general, you can grasp the pins by your fingers, or, if you're
worried about static, you can insert the leads into a conductive foam
base and use that to control the LED.

For permanent control, you can insert the pins into pre-drilled holes on
 a glass/epoxy mounting base, and apply a metal alloy under high heat
to affix it in place.

<ducking>

-Johnathan

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2003\02\05@161927 by Jinx

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> Has anyone figured out how the heck you actually control a
> full-spectrum LED with just two pins? The data sheet doesn't
> offer any clues

It's a package of LEDs and a sequencer chip. Have a look at
the diagram on page 1 and the last page for cycle timing

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2003\02\05@173826 by Kyrre Aalerud

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Wow.  An electronic component that's almost completely useless!
What will they think of next...

   KreAture

{Original Message removed}

2003\02\05@175839 by William Chops Westfield

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>>    Wow.  An electronic component that's almost completely useless!

Devices using similar electronics are selling like hotcakes as "body
jewelry."  End user price about $3, including batteries and a couple of
NeFeB magnets for attachment (very clever, that last bit.)  I don't even
want to talk about all the "useless" light show capabilities of the current
crop of pens, stereos, and mp3 players ("I guess it's pretty, but what's a
'visualization' FOR?")

BillW

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2003\02\05@181625 by Olin Lathrop

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> Devices using similar electronics are selling like hotcakes as "body
> jewelry."  End user price about $3, including batteries and a couple of
> NeFeB magnets for attachment

Attachment to what?  Your pacemaker, fillings, steel mesh jockstrap?


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

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2003\02\05@182137 by Jinx

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> Wow.  An electronic component that's almost completely useless!
> What will they think of next...

I'm working on it ;-)

A few days ago I heard about this kind of <grumpy old
geezer> crap </grumpy old geezer> on a New Products
radio program. It's about as down market as you can get
IMHO (he said sniffily). Specifically, these products were
mentioned

http://www.gammagarb.com/

5 minute novelties and then Gammagarbage. A buck's a
buck I guess and it appeals to the teeny boppers, so from
a business point of view it's not that dumb. Sometimes I
wish I had an eye for the superficial or ephemeral, but stuff
like that just rubs me up the wrong way. We could do with
a little more uselessnesslessness

Harumph

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2003\02\05@183107 by Bob Ammerman

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One magnet is attached to the jewelry. The other is loose. You place an
appropriate (or inappropriate) piece of your anatomy betwixt the two
magnets.

Bob Ammerman
RAm Systsmes

{Original Message removed}

2003\02\05@183315 by Kyrre Aalerud

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That's why I said "almost useless".

   KreAture

----- Original Message -----
From: "William Chops Westfield" <spamBeGonebillwspamBeGonespamCISCO.COM>
To: <TakeThisOuTPICLISTEraseMEspamspam_OUTMITVMA.MIT.EDU>
Sent: Wednesday, February 05, 2003 11:56 PM
Subject: Re: [EE]: clever LED?


> >>    Wow.  An electronic component that's almost completely useless!
>
> Devices using similar electronics are selling like hotcakes as "body
> jewelry."  End user price about $3, including batteries and a couple of
> NeFeB magnets for attachment (very clever, that last bit.)  I don't even
> want to talk about all the "useless" light show capabilities of the
current
> crop of pens, stereos, and mp3 players ("I guess it's pretty, but what's a
> 'visualization' FOR?")
>
> BillW
>
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2003\02\05@183557 by William Chops Westfield

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   > Devices using similar electronics are selling like hotcakes as "body
   > jewelry."  End user price about $3, including batteries and a couple of
   > NeFeB magnets for attachment

   Attachment to what?  Your pacemaker, fillings, steel mesh jockstrap?

Ersatz piercing replacements.  Earrings, lip ornamentation, hair, belly
buttons, and so on.  Hmm.  Real piercing jewlery too, apparently.  And I
wouldn't doubt the steel mesh jockstrap idea, though I have no personal
knowlege on that score.  See for instance:

       http://www.flashingblinkylights.com/

I couldn't immediately find any "real" pictures of suitably creatively
adorned models, though.

Amazing prices, considering.  A several high brightness blue SMT LED chips
and a flasher circuit, for cheaper than I can buy just blue LEDs...

BillW

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2003\02\05@184625 by Jinx

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> Amazing prices, considering.  A several high brightness
> blue SMT LED chips and a flasher circuit, for cheaper
> than I can buy just blue LEDs...
>
> BillW

I know you're of like mind - I'd like every one sold with a
stamped addressed envelope to me so I can get it in a
week or so when the battery has run out

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2003\02\05@185453 by William Chops Westfield

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   I know you're of like mind - I'd like every one sold with a
   stamped addressed envelope to me so I can get it in a
   week or so when the battery has run out

The batteries ARE replaceable.  An interesting side effect has been the
availablity of cheap AG3 sized batteries from the same vendors ($2/card of
10 instead of $2 each...)  (unlike the LED keychain/flashlight market, which
just LOVES to sell people expensive batteries...)

Of course, they're tiny and easy to misplace.  Just the other day I was
wondering what I'd done with the sets I bought at WorldCon last summer...
(for the kids.   Yeah.  That's the ticket.)

They clip nicely to printed badges, too.  You should probably keep them
away from badges with magstripes...

BillW

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2003\02\05@185708 by Dal Wheeler

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A "dollar" store in my area has them.  3 batteries + the LED's in a nice
steel can...  Useful for spotting RC cars; annoying holiday decorations,
really gawdy computer cases...   A teenager around here put an array of them
in the grill of his car --guess he saw a rerun of "knight rider"...

{Original Message removed}

2003\02\05@191534 by Josh Koffman

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I've thought of that too, especially since I was recently looking for
SMT LEDs and didn't want to pay what the local shop wanted. The down
side with those is that they seem to always be encased in some sort of
epoxy. Would make getting them out kind of hard.

Josh
--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
       -Douglas Adams

William Chops Westfield wrote:
> Amazing prices, considering.  A several high brightness blue SMT LED chips
> and a flasher circuit, for cheaper than I can buy just blue LEDs...

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2003\02\05@191746 by Jinx

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>     stamped addressed envelope to me so I can get it in a
>     week or so when the battery has run out
>
> The batteries ARE replaceable.

I know, WE would replace them, but how many wouldn't bother ?

> An interesting side effect has been the availablity of cheap
> AG3 sized batteries from the same vendors ($2/card of

That's one up-side to volume consumption - component prices
go down for everybody

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2003\02\05@201555 by Jonathan Johnson

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....possibly an electronic component that's completely useless.......that's
Fluffy and has big plastic eyes and come with a small packet of 'component
food' ;-)

JJ
{Original Message removed}

2003\02\06@014701 by Bob Barr

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On Wed, 5 Feb 2003 18:15:33 -0500, Olin Lathrop wrote:

>> Devices using similar electronics are selling like hotcakes as "body
>> jewelry."  End user price about $3, including batteries and a couple of
>> NeFeB magnets for attachment
>
>Attachment to what?  Your pacemaker, fillings, steel mesh jockstrap?
>

What? You don't have a metal plate in *your* head?

Oh, am I oversharing? Sorry.  :=)


Regards, Bob

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2003\02\06@084107 by Jinx

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> A teenager around here put an array of them in the grill of
> his car --guess he saw a rerun of "knight rider"...

I caught up with a couple of taped documentaries tonight. One
was about the therapies available for treating phobias. EMDR
is one that shows promise. Now THAT'S putting flashing LEDs
to good use

http://www.neurotekcorp.com/eyescan.htm

(EMDR somehow connects the separate parts of the brain
that process intellect/rationality and emotions as the patient
follows a single lit LED going back and forth in a line during
therapy - absolutely fascinating. [OT]: http://www.emdr.com/

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