Let the smoke out...

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not sure did wrong - tried powering arduino nano (clone) 12v supply (through pin 30) , things got hot. ethernet adaptor let lot of smoke out first , although nano has lights on when plug usb, chip on top (atmega328p) gets hot , can't access it. fortunately, seems usb isn't fried too, relief

the ethernet module has lights gets instantly hot.

is regulator that's blown (and able replaced) or should cut losses , chuck them away?

"is regulator that's blown "   yes.
if '328p gets hot, shot.
where's ethernet adapter come play? powered nano 5v pin?


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