Coin Reject button for credits- A guide!

[Brad Lee]

Here's an easy way to setup your coin door reject buttons to give credits. It doesnt require any conventional switchs, and no awkward contraptions to mount those switches

Materials:
Wire
(2) .187 male disconnects, or any 2 pieces of small conductive metal that you can attach wire to
(2) tiny screws or a glue gun
[optional] keylock switch, like what you would find on an old PC to lock the keyboard click for a picture


When you push the coin reject square, it moves a little hammer shaped thing inside(mines red translucent). This contacts a white curved plastic piece thats part o the coin mech itself. I attached a 187 male connecter to the red 'hammer', and another 187 male connecter to the white curved piece. At rest, theyre about 1/4" apart, perfect gap so theres no accidental contact. When pushed though, the 2 connecters make contact, complet ing the circuit, giving a coin!


Heres a VERY bad drawing of a side view of a coin door. The door I have is a happs, probably similar to most of what youll find. The dark blue bits are the 187's. I used a tiny screw through the center of the spade part to attach it to my other plastic pieces(the red hammer and white curve) so that the crimp part with wire would be unaffected. I gave it a little bend to make sure they didnt contact each other. You could also use a glue gun to attach the metal contacts


Here it is with the reject button pushed in, closing the connection between the 187's. You'd probably need to play with positioning a bitto make sure you get a consistent contact when pushed, and that its far enough apart at rest.
As pictured, pick a wire and run it to the coin1 on your ipac(or other encoder). Run the other wire to your common GND point.


Now heres the cool part.. This is entirely optional. If wired as above, the reject buttons will ALWAYS give credits. Thats fine if you want it to always be free play. If however you want it to be free play for yourself, but make your kids pay(it teaches em responsibility and the value ofa quarter:) ) for example, heres how to add a simple key switch to fix that

Here, the 2 blue lines are coming from 1 coin mech, and the orange lines are coming from the other(assuming a 2 coin door). Run 1 wire from each mech to your encoder as above. For the other wire out of each mech, run them to one terminal of a keyswitch. From the other terminal on the keyswitch, run a wire to your common GND.
The keyswitchs Ive pulled out of PCs have all had 2 terminals. Im sure there are other types with multi-poles, NO NC and all that other stuff, butthis is keeping it simple.
When the keyswitch is in the ON position, itll complete the GND circuit, allowing free credits by pushing the reject buttons. When the switch is in the OFF position, theres no ground, so theres no conenction possible.*



Hopefully this will help some of ya that are looking for a way to do free credits without a button on the CP. I know my original attempts involved switches and leaf switches and building a rig to hold the leaf in just the right spot so that when you pushed the reject it made contact. It was messy and not consistent at all.

*I originally ran the coin1 and coin2 wires through the keyswitch, but that had wonky results such as inserting both coins anytime either reject was pushed

Ill do some pictures of this tonight, incase my fine art above is a little confusing

[screaming]

Wow! This helps out a lot! I'm just about at this point in my cab building too. Perfect timing!

I'll put this to great use! Great work!

/Steve

[Sephroth57]

thats cool, i plan on doing that eventually. i like the ability to turn it off

[Sasquatch!]

Interesting way to do it.  Thanks for the write-up, d00der.

[alphasqorner]

cool idea.  I may add that feature myself on my cp.