@György-Farkas Also it seems that the atmega is just connected to the 3,3V and not the 5V, and maybe it therefore was protected since it never was in direct contact with 12V.
I hope at least :-)
Posts made by Lars Flikkeid
Arduino Dock fried. Is it possible to repair?
I managed to fry my Arduino dock using a 12V supply even if I had read before that it just takes 5V.
My Onion2+ and the OLED expansion is not broken.
However. Which component get damaged. Any suggestions?
The level-shifter, the regulator or what else?
I would like to repair the unit if possible.