How to create a pulse making device

[Latemodelracer2]

I have 6 video games in my house that i would like to override the bill vailidators on. To add credits to the game you must simply ground the 5vlt wire that goes to the boll validator but that can cause a coin jam when done by hand and not really quickly in pulses like a bill val. What i would like to create is a device that can be used to simply switch to whichever game i want and push a button and put 5 10 or 20 credits on the game with each credit being a pulse. Each games ground can be tied togethor allowing you to have the 5vlt wire that is switched to be grounded so it has its won games ground. If all this sounds right i basically need a device to make a pulse that acts like me touching a games wires togethor but a lot quicker than the hand can do and more pulse in a row at one time if possible.

Thanks

 

[itsmoked]

Do a WEB search for 555 timer circuits! They are used for this kind of stuff all the time. You can buy them at Radio Shack. Cludge a circuit together from a 555 site or 555 recipe book (also available from RS). You can talor the pulse trains to all sorts of patterns.

If after you have gotten this far and have specific questions come back with them!

 

[Latemodelracer2]

sounds good off to radio shack i go.