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LED credit display
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Scumgriever:
Hi everyone,

I picked up the old arcade cabinet that I found for cheap at a local pinball repair warehouse a few days ago and have been having a look at it.

The cab is a pretty generic one that I used to see around the arcades quite a bit here in Australia. I think it was a Simpsons game originally, partly due to the layout of the plugged controls and the start buttons, but mostly due to the distinctive blue bevel.

The cab has a little 2 digit led display in the bevel which shows how many credits you have and I
Scumgriever:
Nobody has any ideas?

Maybe i'm not explaining it well.

I'll be using a mechanical coin mech, an aussie 20c one.

I'm trying to figure out how I can wire a system up that will count how many coins have been inserted and allow that many button presses of the 'credit' button to register.

Basically so that I can use my one coin slot to work for all four players.

I cant find anything about this stuff anywhere.
There is a brief mention of coincounters on the BYOAC Wiki but the link that is is referring to is dead. other than that I can't find anything.

Please help. It's doing my head in. ???
rdagger:
Does the LED counter currently work when you insert a coin?
Are you looking for a circuit to drive the dual 7 segment LED display?
Scumgriever:

--- Quote ---Does the LED counter currently work when you insert a coin?
--- End quote ---

No the LEDs and board that they're connected to are very dead, I'm going to have to start from scratch.


--- Quote ---Are you looking for a circuit to drive the dual 7 segment LED display?

--- End quote ---

Yes, and also cutoff the credit buttons when the LEDs are reading 0.
Hippo:
There are 2 ways of doing this.

One is to use discrete logic. This will require at least 2 7 segment drivers, an up-down counter and a couple of other IC's.

The other is to use a PIC microchip or equivelent.

Both methods require some time and effort to get working.
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