In a business working with coin acceptors for their services, I need to add an interface similar to this in the photo so that I 'll get a barcode to the rs232 output similar to the value of the coin inserted.
The interface appeared is already working for ten years now but now I need to add machinery with these different coin acceptors in the photos.
I got all the related details with the board schematics and electronic diagram in case that it helps.
I got also the barcode list related to coin values
the board is based on Atmel At89s52. I don' have the ic firmware from the previous developer.
At the input side of the board, we got 8 independent inputs that have to recognize the pulse signals from the coin acceptor output.