Is the Arduino able to output 5V 2A if I for example get a 12V 3A DC adapter to power the Arduino?
Doesn't the Arduino want more than 5V?
Quote from: GaryF on Sep 08, 2013, 10:57 pmDoesn't the Arduino want more than 5V?Not if you connect that to "+5".[N.B. When so doing, nothing should be connected to Vin and/or the "DC-in" barrel jack]
Notice that your Arduino boards have connections labelled 5V+. If you leave the main power connector unused, any 5v supply on this pin powers the board. I do this all the time. I'm sure the Mega is similar. Be careful that it is 5v and only 5v. No protection against reversing leads.Someone with Mega experience will hopefully comment.
Depends on your power connections. You will have the +5s isolated by diodes or something?