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How to wire coin up buttons to be toggled on/off

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Kevin Mullins:
If your ground is truly daisy chained from one button to the next..... then no, you can't use the ground side to make the break otherwise the next buttons in line will not work when the switch is off.

So just do it to the other side.

steveh:
you would have to run a special ground just to your coin buttons.  this should not be a big task. 

what you are looking to do is break the connection that is made when the button is pushed.  you can do that by switching each individual wire on the button.  Or to the common ground to all the buttons. either way you are stopping the connection back to the ipac (or whatever)

JustMichael:

--- Quote from: QuixoteQuest on January 18, 2007, 11:29:31 pm ---
--- Quote from: JustMichael on January 18, 2007, 10:23:35 pm ---QuixoteQuest,  take the wires going from ground to the coin buttons and disconnect them from ground.  Connect the loose ends to one side of a toggle switch.  Connect a wire from the other side of the toggle switch to ground.  This will allow you to enable or disable the coin buttons by allowing or preventing the ground from reaching the 2 coin buttons.  This won't affect the other buttons.

--- End quote ---

Really, it's the ground I want to interrupt on those buttons--even though they are daisy chained with the rest of the grounds on the other buttons? I thought it would be the other connection on the button that would need to be wired to the switch. . .

--- End quote ---

If the ground literally goes from one button to another, disconnect the ground from both of the coin buttons.  Don't break the wire loop.  Wrap one of the disconnected ground connectors on the wire with electrical tape (so it can't accidentally contact something).  Connect the other ground connector to one side of a toggle switch.  If the wire is too short,  connect a longer wire to it.  Connect the other side of the toggle switch to each button where the ground connector was.

The reason I suggest switching the ground is that you would need only 1 switch no matter how many coin buttons you have.

Yes you could use seperate switches as you thought in:

--- Quote ---So my thought is this: Could I cut the non ground wire going to each coin-up button, then wire on an extension to each of the two pieces. Then I could wire each set of two wire extensions down inside the cab behind the locked coin door and hook each end to some sort of always on/off switch where one side of the wire goes on one terminal. The other wire goes on the other terminal. Then when the switch is turned "on" the circuit would be completed and the free coin buttons would work (in addition to the coin door). When turned off the circuit would be broken and only the coin door would work.
--- End quote ---

As for:

--- Quote ---I'm sure there is probably some kind of switch that could be mounted right to the surface of the wall on the inside behind the coin door that wouldn't require drilling all the way through the wall to mount.
--- End quote ---

I don't know of switches like that except knife switches (like used in Frankenstein).  All the switches I have used, the switch is on one side and the connections are on the other.  This is done to keep people from coming into contact with the wiring.  More likely than not you will need a hole all the way through to mount and wire your switch.  Radio Shack has a wide variety of switches and there is usually one local to most people. Go take a look and find a switch that you like the look of.  DO NOT buy any that say "momentary".  These are the same as arcade buttons.  They will not work as you need them to.  I think a toggle or rocker switch would be fine for this and look nice too.  Voltage and amperage ratings of the switch don't matter for this application.  All of them exceed what is needed.

NoOne=NBA=:
There's one thing that everyone is missing here.
Unless you specifically prevent access to the admin functions of MAME, they can easily remap the coinup to whatever they want, and then put it back with you being none the wiser.

QuixoteQuest:

--- Quote from: NoOne=NBA= on January 19, 2007, 06:50:10 pm ---There's one thing that everyone is missing here.
Unless you specifically prevent access to the admin functions of MAME, they can easily remap the coinup to whatever they want, and then put it back with you being none the wiser.

--- End quote ---

You're right. Even eliminating the keyboard there is a workaround if you can get into the IPAC mapping software. I don't need this to be an impervious commercial unit. Just a portion-controlled home unit that hopefully will not be abused, to the best we can monitor it, and for which I just wanted to implement a more elegant switching mechanism than disconnecting/reconnecting the leads off the bottom of the coin-up buttons.

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