Actually, currently the Uno is running off USB, and the buttons, hbridge etc are running of a 6V power supply (2200mah? I would have to check, its a universal AC wall adapter)
I think for the sake of getting the system to work for purpose of my upcoming presentation, I am going to rebuild the system and try to get it working.
Also, I cant seem to find this info. If my Arduino Mini 5V, runs at 5V, will it be ok if one of the inputs rates at 6V or less? Im curious because I am considering changing my wiring scheme so that the button connects to Ground THROUGH the Arduino, instead of using a 10k resistor and sensor wire.
Thanks!