Coin acceptor and player one

[Musicbomb101]

I recently got my hands on a DIY kit. It came with Pandora's Box 4 and a jamma harness and a bunch of other stuff to make an arcade cabinet. My question is can I use both the coin acceptor and the player one button to get credits for the machine, or do I have to choose one or the other?

[PL1]

Yes, you can wire as many pushbuttons as you want in parallel with a coin acceptor to the coin input.

The input doesn't care where ground comes from.

I assume that by "player one button" you mean P1 Coin not P1 Start.


Scott

[Musicbomb101]

On the pin layout for the 28 jamma harness it shows (16, coin switch #1) (17, 1P start) then on the Solder side (T, coin switch #2) (U, 2P start)

[PL1]

On the pin layout for the 28 jamma harness it shows (16, coin switch #1) (17, 1P start) then on the Solder side (T, coin switch #2) (U, 2P start)

You can either solder a second wire to pin 16 (red) or connect to the other end of the wire by the acceptor. (green)

                  P1 coin button
               _____/_______________
              |                   |                    |
ground__|__acceptor_|__________|_pin 16

Either way, the coin button is wired in parallel with the acceptor.

Drop a coin in the acceptor, the acceptor momentarily applies ground to pin 16.

Press the coin button, it applies ground to pin 16.

When pin 16 is grounded, it completes the circuit for that input. and the JAMMA board adds a credit.


Scott

[Musicbomb101]

On the pin layout for the 28 jamma harness it shows (16, coin switch #1) (17, 1P start) then on the Solder side (T, coin switch #2) (U, 2P start)

You can either solder a second wire to pin 16 (red) or connect to the other end of the wire by the acceptor. (green)

                  P1 coin button
               _____/_______________
              |                   |                    |
ground__|__acceptor_|__________|_pin 16

Either way, the coin button is wired in parallel with the acceptor.

Drop a coin in the acceptor, the acceptor momentarily applies ground to pin 16.

Press the coin button, it applies ground to pin 16.

When pin 16 is grounded, it completes the circuit for that input. and the JAMMA board adds a credit.


Scott

Thank you so much this helps out a lot. I have been learning a lot with making this thing. Most of this felt self explanatory but I'm just quadruple checking. Hahaha