I know the specifications show the input voltage to be 7-12V. I have a random 12V 1A power supply I received from someone that is center pin positive and from what I could tell, fits just fine (didn't apply actual power). I know the polarity is correct but I wanted to confirm whether or not I would have any issues supplying 12V to the board. I assume the regulator is a linear one and if I'm dropping it down to 5V, it's going to heat up. That's what I'm most concerned about it heat. If this isn't going to work, then I'll just continue giving it power from USB or batteries when needed but having a power supply would be useful.Thanks!