6 switches DUE circuit help

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hello, in project, need set 6 led switches commute between modes.
i made programation switch between them , works fine, in test use 5v output of th arduino due,
as show in example http://arduino.cc/es/tutorial/button, use tft shield cte35ips, wich ocupe 5v output.

what should do? should use external battery circuit? in case, resistance should use?
there anyway use power arduino? divide 5v output?

thanks in advance!



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