Electronics > Repair
Progressive Gaming / Neurizon LED sign
<< < (5/6) > >>
@rt:
I’m not normally the grammar police, but please, learn grammar before calling someone a fool.
How about analysing datasheet of the display drivers?
The controller had to talk to the LED array PCB, so it’s possible for another controller to talk to the LED array PCB.
The display drivers are made to ... wait for it.... drive the 8x8 LED modules.

I don’t think the OP even wanted to connect it back to a game machine. Just display something arbitrary with it.
You could quite possibly find out all there is to know about the end product, and still find that it can only display dollar values, which would be useless.
I’ve determined so far that one pin on the 50 way connector is a single clock input for the entire LED array board.

stj:
as someone who spends all day reverse engineering stuff, i'll explain.

first you find which port is active - just because you see many does not mean the software is using all of them.
a sevice manual for the gaming machine may show you the port in use.

once you know that,
the firmware of the gaming machine can be obtained and reverse engineered or emulated to capture the comm's to the display unit - then you have all you need.........

simple - till you throw things away and start trying to over-complicate things.

also, gaming machines often use standard protocols like MDB and CCTALK that are open and well documented.
@rt:
You could not, for example, write Tetris for it.... or if you could, it would be taking the difficult road.
This is an electronics forum. I’ve written Tetris for an LED display made from scratch.
It isn’t unreasonable that I see a bunch of LED modules and drivers where you see a product.
stj:
it may be bitmapped to several pages of ram - or atleast it was.
@rt:
Anything that is going to drive a display matrix should buffer to RAM first.

I’m confident now the extra chips just buffer, and synchronously distribute the signals that are common to every driver on the board.
These include all of the the serial clock, blanking, and latch pins.
I have sent random bits in serial with a 1kHz clock signal, and they can be seen live, or frozen depending on the state of latch.
There’s an LED on the back of the LED array board that lights whenever it's seeing an input clock signal.

To send 160 bits parallel on all six serial channels x 8 LED rows in each module would take 1280 serial clock cycles to update the entire display once if I’m not mistaken,
and double that if you want to mix red and green to produce orange, or to alternate any colour to produce hues of colour combinations.



Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod