Hello this is quite a general question but i couldn't find an elegant solution for it
in my project i am using two arduino mega (2560)
the first one i power up through pin Vin (12V)
and it works great
the second arduino has TFT Screen on it with the Expansion ( ILI9341 )
and it covers most of my pins including the Vin
so i cant power up my device through that pin.
i know i can power it up through a cable through the USB Port
and also use a 9v battery through the plug
but i prefer a different solution
(the LCD works great and im very satisfied with it)
picture attached
thanks 
