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LED display, hackable?

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Xiondz:
Thanks for response
It is part of machine i've get, inside was only monitor, original power supply and that LED display, no documentation included, googling does not help.
It seems to be over my skills   :-\

MonMotha:

--- Quote from: ChadTower on February 10, 2011, 02:37:55 pm ---Or you could just call the manufacturer and see if they have documentation on usage of the device.  Nobody sells something like that without an instruction booklet.   ;D

--- End quote ---

That thing looks so old I'd honestly be a little surprised if the company that made it is still in business, let alone still supporting that particular model in any fashion.  I'm not sure you can buy some of those parts, anymore.  On the upside, stuff that old often came with full programming info in the manuals.

melvinbates:
Looks like the display columns are driven by some darlington arrays(the uln2803s).  I would guess that the rows are driven from those larger chips near the bottom.  I can't quite make out what the chip is above the uln2803s or what's on the bottom of the display.  If you could get a better picture perhaps.

MonMotha:
They're 74HC164 serial-in parallel-out shift registers.  Basically, you have a giant shift register with a latch signal (you can use a SPI controller to talk to this) for the columns, and then there is probably some other way to drive the rows (could be part of the same shift chain).

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