Credit Management system for Mame Arcade

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Bids
9
Avg Bid (USD)
$657
Project Budget (USD)
$250 - $750

Project Description:
I am looking for a circuit design for a standalone credit management system in a Mame arcade. Circuit will receive a swich input and keep count (up to 99) of the ammount in a pool. Then when another switch is pushed it will remove one unit from the credit pool and active a switch to credit the Mame system. The display is driven by Nixie tubes (NH-12A to be specific) and will be driven by K1551D1 (74141)'s so I need output to work with those components.

Links to help you understand some of the terms and equiptment here.

Mame http://mamedev.org/
Nixie Tube (Nh-12A) http://www.instructables.com/id/Nixie-tube-projects/
K1551D1 (74141) http://www.neonixie.com/ic/index.html

Additional Project Description:
02/19/2013 at 13:12 GMT
Additional info: I have all the components needed. I have a arduino UNO and MEGA, the 74141 drivers and the Nixie tubes. What I am looking for is the wiring diagram and the programming for the arduino. I hope this clarifies the situation and my apologies for not adding that.

Thank you.

Skills required:
Arduino, C Programming, Electrical Engineering, Electronics
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Domasi United States
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