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'[EE] Help locating surplus LCD supplier from past'
2005\04\27@133604 by Ben Palmer

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Hi,

I am looking for some information that someone posted the other day regarding a supplier of surplus electronic components.  I’ve tried searching the archives and on the web, but I just can’t remember enough specifics to narrow down the search.

The poster included a link to a pdf page that was from a catalog or flyer from a surplus parts supplier in Texas, I believe.  I remember that the color of the page was yellow.

I am working on a new little project and am looking for a source of really cheap LCD character displays (pulls are fine), and I recall that this supplier had just what I was looking for.

Any help would be appreciated.

Thanks,
Ben
N7MZZ

2005\04\27@144632 by Bob Blick

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> The poster included a link to a pdf page that was from a catalog or flyer
> from a surplus parts supplier in Texas, I believe.  I remember that the
> color of the page was yellow.

bgmicro.com ?

2005\04\27@155707 by Philip Pemberton

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In message <spam_OUT17168.66.52.191.4.1114627591.squirrelTakeThisOuTspamwebmail.sonic.net>>          "Bob Blick" <.....bblickKILLspamspam@spam@sonic.net> wrote:

> bgmicro.com ?

Speaking of BG Micro and LCDs... did anyone ever find out how to get the 16x1
"salvaged from old medical equipment" LCDs to work outside of the plastic
casing? I've got three of them here, and still haven't found a way to do it
without causing the display glass to fall off :(

Later.
--
Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpemspamKILLspamphilpem.me.uk              | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.me.uk/          | 48xCD, ARCINv6c IDE, SCSI
... Beam me up Scotty, there's no life out here.

2005\04\28@091721 by Jeff Galinat

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----- Original Message -----
From: "Ben Palmer" <.....bhhpalmerKILLspamspam.....hotmail.com>
To: <EraseMEpiclistspam_OUTspamTakeThisOuTmit.edu>
Sent: Wednesday, April 27, 2005 1:36 PM
Subject: [EE] Help locating surplus LCD supplier from past post


{Quote hidden}

Ben (& other interested parties),
 I have been using a LCD source that I found though eBay.  They have an LCD
outlet page on their website that I have been ordering through.  I really
like the 2x16 STN display (dark blue chars on green backround) for $2.99 ea
or $2.39 each in qty 50.  I feel that the shipping is reasonable - UPS
ground was $14 for 30 displays from CA to NJ.  I have no connection with
this supplier other that being a satisfied customer.  Here is the link to
their outlet page:
http://www.411techsystems.com/html/lcd_outlet.html

The model I have been using is the MDLS16265-LV which is the second item
down on the page.  I have been building PIC based serial interface LCD
modules to sell at hamfests and have been very happy with the quality of the
displays.

73,
Jeff Galinat - N2KWK


2005\04\28@093449 by Howard Winter

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Jeff,

On Thu, 28 Apr 2005 09:17:17 -0400, Jeff Galinat wrote:
>...<
> http://www.411techsystems.com/html/lcd_outlet.html

Any idea what they mean (on the ones at the bottom) by: "6 o'clock viewing" and "12 o'clock viewing" ?

> The model I have been using is the MDLS16265-LV which is the second item
> down on the page.  I have been building PIC based serial interface LCD
> modules to sell at hamfests and have been very happy with the quality of the
> displays.

As a matter of interest, what price do you get for your modules?

Cheers,

Howard Winter  G1BYY
St.Albans, England



2005\04\28@101655 by Jeff Galinat

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----- Original Message -----
From: "Howard Winter" <HDRWspamspam_OUTH2Org.demon.co.uk>
To: "Microcontroller discussion list - Public." <@spam@piclistKILLspamspammit.edu>
Sent: Thursday, April 28, 2005 9:34 AM
Subject: Re: [EE] Help locating surplus LCD supplier from past post


{Quote hidden}

Howard,
 I think it refers to the optimum viewing angle but I am not sure what it
means exactly.  The serial LCD modules are hand assembled by me on prototype
board connected as a daughter board to the LCD's 1x14 header. It took a
little time to make the first 2 or 3 but I got better at it. I built 10 as
an initial trial for sale at the Trenton Computer Fest in NJ 2 weeks ago and
priced them at $20.  I set up a demo using a Basic Stamp with display
scrolling effects.  I sold out of the 10 in about 4 hours.  These are based
on the PIC16F84a which has been superceded by newer PICs now but I bought 50
off of eBay a while ago for less than $1 each so that's what I'm using.
Here's a picture of the board: http://www.towacoimaging.com/ser_lcd1.jpg
I am not much of a programmer and never learned ASM or C, but the Serial LCD
code was only a few lines in PicBasic Pro
73,
Jeff - N2KWK


2005\04\28@110436 by ks_pic

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Quoting Howard Winter <KILLspamHDRWKILLspamspamH2Org.demon.co.uk>:
> Any idea what they mean (on the ones at the bottom) by: "6 o'clock
> viewing" and "12 o'clock viewing" ?
>

It refers to whether the LCD looks better when viewing from below
straight on (6 o'clock) like a calculator normally would or above
(12 o'clock).

My current project is meant to be viewed from below, but because
of how the LCD is connected to the main board I use a 12 o'clock
one upside down.

Karl



2005\04\29@061958 by Howard Winter

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Jeff,

On Thu, 28 Apr 2005 10:16:42 -0400, Jeff Galinat wrote:

>...<

LCD 6 o'clock & 12 o'clock specifications...

>   I think it refers to the optimum viewing angle but I am not sure what it means exactly.

I think I understand now, following a clue from another poster (sorry, I forget who!) having tried looking at
a calculator and changing its pitch angle, the display is quite distinct when seen from "below" (6 o'clock) as
you would normally look at a calculator, but it begins to fade as you go over the top towards looking down at
it (12 o'clock).  I'd never considered this before, assuming the angles were symmetrical, but it seems to be
legible from about 15 degrees above the lower horizon to about 15 degrees past (above) zenith, so this is
obviously a 6 o'clock display!  Other commercial devices I have with LCDs (weather monitor, clocks) seem to
have symmetrical viewing angles, so it seems there are three types.  I can't think of many situations where
you'd be looking down at an LCD, needing the 12 o'clock version.  So that's my "you learn something every day"
item for today!  :-)

{Quote hidden}

OK, thanks for that.  A question about the picture:  How do you do the connection to the LCD?  You seem to
have some sort of socket or pin-strip, but with the plastic housing obscuring the copper track - how did you
solder it?  (This is a problem I often have with single-sided boards which need off-board connectors facing
the "wrong" way).

Cheers,


Howard Winter
St.Albans, England


2005\04\29@104214 by Jeff Galinat

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----- Original Message -----
From: "Howard Winter" <RemoveMEHDRWTakeThisOuTspamH2Org.demon.co.uk>
To: "Microcontroller discussion list - Public." <spamBeGonepiclistspamBeGonespammit.edu>
Sent: Friday, April 29, 2005 6:19 AM
Subject: Re: [EE] Help locating surplus LCD supplier from past post


{Quote hidden}

Howard,
 The way I connected the boards was to use a single inline socket (AKA
female header) on the LCD facing the daughter board and a pin strip header
on the daugheter board.  What I did was push the pins in flush with the
plastic body of the header using pliers and inserted them from the component
side of the daughter board. This is the strip that you see at the bottom of
the board.The plastic body acts as a stop & a small amount of solder on the
solder side holds it in place without interfering with the mating to the
female header.  I break the headers into six & four pins as I use the
displays in 4 bit mode so 4 data lines are not used so I can't see wasting
the pin strip.
Best regards,
Jeff Galinat



'[EE] Help locating surplus LCD supplier from past'
2005\05\02@070822 by Howard Winter
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Jeff,

Thanks for the reply...

On Fri, 29 Apr 2005 10:42:13 -0400, Jeff Galinat wrote:

>...<
> Howard,
>   The way I connected the boards was to use a single inline socket (AKA
> female header) on the LCD facing the daughter board and a pin strip header
> on the daugheter board.

Ah!  That's where I was confused - I usually fit the pins to the LCD (in fact some of them come ready-fitted)
so fitting a socket on the copper side of the board is pretty-much impossible.  I'll have to start thinking
upside-down :-)

>  What I did was push the pins in flush with the
> plastic body of the header using pliers and inserted them from the component
> side of the daughter board. This is the strip that you see at the bottom of
> the board.The plastic body acts as a stop & a small amount of solder on the
> solder side holds it in place without interfering with the mating to the
> female header.

I'm not sure my soldering is neat enough to not interfere  :-)  but I suppose the sockets don't have to bottom
against the board anyway - perhaps having the pins as long as possible will cause them to end-stop inside the
sockets.

> I break the headers into six & four pins as I use the
> displays in 4 bit mode so 4 data lines are not used so I can't see wasting
> the pin strip.

I have supplies of 4 and 6 pin SIP sockets (which are hard enough to come by as it is, without trying to find
14 and 16-pin ones), so I do this naturally, but thanks for the tip.

Cheers,


Howard Winter
St.Albans, England


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