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Hi everyone, hardware hacking question here. Should be simple but Im asking because the cost of failure is a burned up computer...but if this works this hack would be of use to other people driving servo powered robot arms.

I am driving hobby servos from an arduino nano breakout board & my application needs more current & voltage than the nano can pass.
So I want to pump up the 5v line by connecting it directly to Vin...The danger is passing >5v back to my computer via usb so I am trying to clip arduino pins to isolate it. Any tips of which pins to clip?