I pulled this coin mech from an Asteroids cabinet I converted to Mame.
it looks daunting with all these wires but its really simple.
Most of that wiring is lighting and tamper switches. there are two micro-switches that actually detect the coins. there are also two counters that keep track of how many coins have been collected. About 69,000 Quarters totaling over $17,000 have been through here…..
An Arduino Leonardo will make this Mame compatible…
I may just save this one as a spare for my Techmo Cabinet Rebuild and build the Arduino controller with these generic quarter mech’s. They will work nice in a DWjukebox project too.
Here’s all there is to the circuit. A Leonardo or Micro and a 4.7K pullup resistor. The computer sees it as a USB keyboard and every time a quarter is detected it sends the keycode for the insert key which , by default in DWJukebox, is the quarter signal.
The code is not much harder…..
Here’s the sketch if you want to try it….