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'[EE]: Large LED Matrix Displays'
2002\07\25@070643 by Cole Christopher J

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Hi,

Does anyone know a cheap place (hopefully in the UK) to get hold of some relatively large (say about 60cm x 10cm) LED Matrix displays from? The kind of displays used for 'tickertape' scrolling displays commonly seen at conference centres etc. No need for exceedingly high resolution, multicolour or any other fancy things, just enough to display a line of 10cm high characters, fairly brightly.

A quick prod at the RS catalogue only yielded some very expensive units with built in RS232 links & PC based software, a bit of an overkill for my requirements.

Cheers,

Chris.

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2002\07\25@072719 by Alan B. Pearce

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>Does anyone know a cheap place (hopefully in the UK) to get
>hold of some relatively large (say about 60cm x 10cm) LED
>Matrix displays from? The kind of displays used for 'tickertape'
>scrolling displays commonly seen at conference centres

What sort of time scale are you looking at?

It might be as quick to get some strips of Vero board and mount LED's on
them. Knock up some shift registers and a PIC to drive it.

Else see what is available through hire companies if you are on a short time
scale. The ones that do corporate events are likely to have this sort of
thing for shows and the like.

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2002\07\25@073804 by Cole Christopher J

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I did think about going the DIY route, however, for 60x10cm, it works out as an awful lot of LEDs and a fair bit of time spent wiring them up too. Not to mention the fact that my DIY electronics projects always end up looking absolutely awful ;) This is just for a personal little project I've wanted to do for a while, (permanent thing, so renting isnt an option) was kind of hoping to pick some LED matrix up off the shelf for around the 30ukp kind of mark - as you say, there's not an awful lot to them if you strip out the control side.

Chris.


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2002\07\25@080406 by zantos

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Worth trying  http://www.kingbright.com They use to stock a 5x7 stackable
10cm high block. Cannot recall the part number. Also contact JK Components
in the UK - Kent (I have no connection with them). They are very good on
price, delivery and I found most helpful. I will see if I can dig out the
part number..

Connect to appropriate Darlington drivers and your favourite PIC and there
you are....
z



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2002\07\25@084053 by Geo
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On 25 Jul 2002, at 11:59, Cole Christopher J wrote:

> Does anyone know a cheap place (hopefully in the UK) to get hold of
> some relatively large (say about 60cm x 10cm) LED Matrix displays
> from? The kind of displays used for 'tickertape' scrolling displays
> commonly seen at conference centres etc. No need for exceedingly high
> resolution, multicolour or any other fancy things, just enough to
> display a line of 10cm high characters, fairly brightly.

You could have a look at the junk at Display Electronics
http://www.distel.co.uk/
Select OptoElectronics (when the thing eventually loads )then Led
Alpha/Num Scrolling Units.
The are 13 items - but maybe not big enough for you (although one -
unpriced  - claims to be 2.37 m long)



George Smith

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2002\07\25@085327 by Quentin

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I have seen units from Toshiba (I think) which have build in shift
registers. You connect them up in a chain and clock the data in from one
side. The clock will shift everything through from the one to the other.

Quentin

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2002\07\25@092304 by mike

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Unless you want to build from scratch, 'Large' and 'cheap' are
mutually exclusive.

50mm high 5x7 matrix modules can be had for about UKP1 in quantity
(1.22 in Farnell 100x), but you have to roll your own drivers.
Bigger modules can be got, but you may have to go to a franchised
distributor to get a decent price - try Kingbright, LED technology
etc.

Alternatively you can probably pick up a general purpose
moving-message display a lot cheaper than in RS and interface to it




On Thu, 25 Jul 2002 11:59:04 +0100, you wrote:

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2002\07\25@123546 by Brendan Moran

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> Does anyone know a cheap place (hopefully in the UK) to get hold of
> some relatively large (say about 60cm x 10cm) LED Matrix displays
> from? The kind of displays used for 'tickertape' scrolling displays
> commonly seen at conference centres etc. No need for exceedingly
> high resolution, multicolour or any other fancy things, just enough
> to display >a line of 10cm high characters, fairly brightly.

I'm amazed that no one else has mentioned this:  Try looking for used
ones on ebay.  I think that there's some surplus there from an old
company called Silent Radio.  It has PC software, which I have
kicking around, and builtin RS-232 capability.  If you want to
control it from a PIC, then you're going to have to deal with some
junk, because there's a CRC embedded in it.  A thread on slashdot has
the solution to the CRC problem, so you can search their archives for
Silent Radio.  The post that has the solution is titled something
like "solved it"

Good luck.

- --Brendan

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2002\07\26@025249 by Amaury Jacquot

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On Thu, Jul 25, 2002 at 11:59:04AM +0100, Cole Christopher J wrote:
> Hi,
>
> Does anyone know a cheap place (hopefully in the UK) to get hold of some relatively large (say about 60cm x 10cm) LED Matrix displays from? The kind of displays used for 'tickertape' scrolling displays commonly seen at conference centres etc. No need for exceedingly high resolution, multicolour or any other fancy things, just enough to display a line of 10cm high characters, fairly brightly.

they are made of 7*5 or 8*8 modules you can find at farnell or
radiospares. these modules can be set up to be right next to each other
and form a large wall.

Amaury

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2002\07\26@025915 by Amaury Jacquot

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On Thu, Jul 25, 2002 at 11:59:04AM +0100, Cole Christopher J wrote:
> Hi,
>
> Does anyone know a cheap place (hopefully in the UK) to get hold of some relatively large (say about 60cm x 10cm) LED Matrix displays from? The kind of displays used for 'tickertape' scrolling displays commonly seen at conference centres etc. No need for exceedingly high resolution, multicolour or any other fancy things, just enough to display a line of 10cm high characters, fairly brightly.
>

radiospares item ID 589-187 or 171-2265 are nice (2.6cm tall)
you will however find cheaper sources looking for HDSP-4xxx in google

here's a page listing what HP/Agilent does
http://www.semiconductor.agilent.com/cgi-bin/morpheus/networkProducts/newProdLineProductList.jsp?bHasProductCategory=1&bHas48Dimension=1&bHas48MinIntensity=0&numProdCategory=1&bHas48MinIntensityMCD=1&bHas48Color=1&clearQuery=Y&prodCategory0=C33&pSection=LED&bHas48MinLuminanceCD=1&BV_SessionID=@@@@0559057709.1027666603@@@@&BV_EngineID=fadcejiddhflbemgcgjcfijdio.0&prodCategory=Dot+Matrix+Displays

hope you find what you are looking for in there

Sincerely

Amaury

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