A multimeter is a tool that measures electrical properties like resistance, voltage, and current. It is used to test ...

Assuming that's true, and that the neutral wire is white (it usually is), set your multimeter to continuity mode; this might be combined with diode check mode, so consult your multimeter's manual ...

A diode mode multimeter check confirmed, yes! It was time for an outlandish attempt to recover the firmware. [Manawyrm] proposed that [Jason] connect all output pins but one to 5 V, powering the ...