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how to convert LCD DISPLAY TO LED VICE VERSA

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sunny@555

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Jan 16, 2011, 2:19:02 AM1/16/11
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I have one electronic instrument weighing m/c it has lcd display i
want to convert it into led display i want to know how ?

TTman

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Jan 16, 2011, 4:13:20 AM1/16/11
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"sunny@555" <sabi...@gmail.com> wrote in message
news:4ecc4de8-a59b-496b...@w17g2000yqh.googlegroups.com...

>I have one electronic instrument weighing m/c it has lcd display i
> want to convert it into led display i want to know how ?

A major project as I would assume the electronics is based around a custom
chip... At the least , you would have to have a fair amount of electronics
to 'capture' the data being sent to the LCD. If it's a graphic matrix
display, I'd give up now...


TheGlimmerMan

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Jan 16, 2011, 8:13:19 AM1/16/11
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Many LCD displays are custom, and have "segments" that are "symbols"
instead of any alph-numeric character or character segment.

Some are dot matrix graphics arrays.

Of the two, the graphics array would be the easiest, but you would have
to 'grab' every line and row vector from the array, and drive a full set
of drivers that would then fire each LED.

Like the other guy said... give it up now.

An interesting item to look at in this arena are the Logitech series of
keyboards (so called "gaming keyboards")which have an LCD graphic array
on them

The first series was fairly low resolution. A mere 160 x 43, the G15.

They are now full color and 320 x 240 able to play movies (and do).
As in the Logitech G19.

a7yvm1...@netzero.com

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Jan 16, 2011, 11:48:42 AM1/16/11
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On Jan 16, 2:19 am, "sunny@555" <sabin...@gmail.com> wrote:
> I have one  electronic instrument weighing m/c it has lcd display i
> want to convert it into led display i want to know how ?

Probably easier to point a camera at it and either do some image
recognition or output to a monitor... These days you could probably do
it with an older cell phone.

The Keeper of the Key to The Locks

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Jan 16, 2011, 1:28:38 PM1/16/11
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On Sun, 16 Jan 2011 08:48:42 -0800 (PST), a7yvm1...@netzero.com
wrote:

There is a guy floating around in here that has a recog software he
wrote for his camera output file(s).

Joerg maybe.. I dunno. An "over there" guy, for sure.

He posted a video of the edge recog in action on passing cars.

Looked promising.

Maybe I saw it in a linux group tho.

mpm

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Jan 16, 2011, 2:37:18 PM1/16/11
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On Jan 16, 4:13 am, "TTman" <pcw1....@ntlworld.com> wrote:
> "sunny@555" <sabin...@gmail.com> wrote in message

But if it's one of those expensive serial data LCD's, it might be easy
to grab the data going to it.
Then use that to drive the LED display.
But the chances of that seem pretty slim.

I think those serial displays are more for hobbyist, and maybe lazy
systems designers. (?)
-mpm

Paul Hovnanian P.E.

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Jan 16, 2011, 3:11:37 PM1/16/11
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sunny@555 wrote:

> I have one electronic instrument weighing m/c it has lcd display i
> want to convert it into led display i want to know how ?

What kind of LCD display? 2x16 character or dotmatrix? VGA or better?
Is there some point at which you can intercept the data stream driving the
LCD display? What format is it in? Something 'standard' like serial
characters, VGA or DVI? Simple to do. Something proprietary (or custom for
the application)? Not so easy.

Why LEDs? Is it an issue of visibility? There may be a fix that involves
keeping the LCD and adding or improving the backlight.

--
Paul Hovnanian pa...@hovnanian.com
----------------------------------------------------------------------
Have gnu, will travel.

The Keeper of the Key to The Locks

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Jan 16, 2011, 4:34:34 PM1/16/11
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On Sun, 16 Jan 2011 12:11:37 -0800, "Paul Hovnanian P.E."
<pa...@hovnanian.com> wrote:

>sunny@555 wrote:
>
>> I have one electronic instrument weighing m/c it has lcd display i
>> want to convert it into led display i want to know how ?
>
>What kind of LCD display? 2x16 character or dotmatrix? VGA or better?
>Is there some point at which you can intercept the data stream driving the
>LCD display? What format is it in? Something 'standard' like serial
>characters, VGA or DVI? Simple to do. Something proprietary (or custom for
>the application)? Not so easy.
>
>Why LEDs? Is it an issue of visibility? There may be a fix that involves
>keeping the LCD and adding or improving the backlight.

Have you seen what the G15 keyboard does? RSS news feeds... all kinds
of stuff! They are 160x43 (Lost numbers?... Naaaaaahw!).

There are G15 websites for the open software to make the thing work in
Linux, because Logitech shot themselves in the foot with at least one
hire, way back when (the idiot that said no to Linux)(AND the idiot that
took away the old style trackballs!!!).

I have seen folks capture jpegs from their cameras, and display them
from within Linux as they are being saved for an old slow-frame-like
experience, except at about 30fps. I'll find the link here...

There are a bunch of G15 and G19 youtube videos of this
display-in-keyboard. Pretty cool stuff.

Farm out!

OceanPit! Flea infestation capital of the US. Built in distribution
system (public transportation)(buses filled EVERY DAY with ILLEGAL
FARMIGRANTS!!!)(Bag ladies)(Bag dudes). Truly sad that San Diego is
also the homeless capital of the nation, if not the world as well.

Beach bums and their bugs everywhere as well.

One must find natural repellents and insecticides for the little
bastards because they are so constant. (the emigrants)(j/k)(yes, I know
which word I chose). No... I mean the insects, of course, not their
carriers...

Remeber, this is only at 160x43!

http://www.youtube.com/watch?v=W9jgNOgAx_A

mpm

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Jan 16, 2011, 5:33:33 PM1/16/11
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On Jan 16, 3:11 pm, "Paul Hovnanian P.E." <p...@hovnanian.com> wrote:
> sunny@555 wrote:
> > I have one  electronic instrument weighing m/c it has lcd display i
> > want to convert it into led display i want to know how ?
>
> What kind of LCD display? 2x16 character or dotmatrix? VGA or better?
> Is there some point at which you can intercept the data stream driving the
> LCD display? What format is it in? Something 'standard' like serial
> characters, VGA or DVI? Simple to do. Something proprietary (or custom for
> the application)? Not so easy.
>
> Why LEDs? Is it an issue of visibility? There may be a fix that involves
> keeping the LCD and adding or improving the backlight.
>
> --
> Paul Hovnanian  p...@hovnanian.com

> ----------------------------------------------------------------------
> Have gnu, will travel.

What a great suggestion!
If the problem is visibility, (not size, or some other concern), and
especially if the OP's got a character LCD, it should be a breeze to
just swap it out with a higher contrast, and possibly backlit
replacement.
Many character LCD use the exact same instruction set (some Hitachi
chip, I think.)

Jasen Betts

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Jan 17, 2011, 7:07:19 AM1/17/11
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On 2011-01-16, sunny@555 <sabi...@gmail.com> wrote:
> I have one electronic instrument weighing m/c it has lcd display i
> want to convert it into led display i want to know how ?

have you considered LCD with led backlight?

--
⚂⚃ 100% natural

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