Can an Arduino 2560 run comfortably at a regulated 12V? I would like to power my projects with a converted ATX power supply and power the Mega from the 12V rail. Or do I need to step it down to 9V I read somewhere the upper voltage limit was 12V Dropping to 9V adds more components, cost, failure…

Power Supply For Arduino

CrossRoads October 16, 2012, 4:31am 7

See section 4. 1N4002 from 5V to Vin.

Has been discussed in the forum as well.

Another manufacturer's data sheet went into it further.

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