I have at least 3 versions of the Pro Mini, and have even designed PCBs that allow for the varying pinouts. Today I tried one (see attached photo) that has been in the parts box for a couple years. Works fine on 5 volts; exploded vigorously at 12V on the RAW input. Still works fine on 5V.
Is there a history of this?
** attachment (JPG) failed security check. What?