Put this aside for a week while I screwed around with other things. Today 5V #wallwart and #breadboard DC barrel jack came

Not sure I dare power the #SBC from the wart (polarity if I ever swap the wart), but can use separate USB there

Plugged the wart + barrel -> VOM to check which pin was what. Yep, 5V. Unplugged....1.5V for many minutes

How large are the caps inside these things? If I unplug it and toss in a bin, is there any chance of a short causing a fire...OR WORSE?

#catvideofeed