I am a huge fan of Marc's Arduino Tito, I have one on all of my machines, and have never had a problem.... until i got an Alpha. I have tried everything. Putting it on com2, swapping tx/Rx, using different DB9 connectors, various arduino boards, I am at the end of my rope now. I get the fast flashing light, therefore it is connected and communicating, Legacy Bonuses is enabled, my attendant button is working, I have tested the functionality on non Bally machines and it works like a charm. Does anyone have any idea what else it could be?
My DB9 is 5 going to 1 ground on the 5pin connector then 3-2 and 2-3. This configuration gives me the fast blinking light on my arduino.
I am willing to try anything at this point.