Are there any open source plug-in devices (or wire-in, or via CTs) that measure and log (to the s or ms or whatever) the voltage and frequency of a home's power?
It's 4am and I notice the incandescent lights periodically dim, even though no loads are clicking on inside the house (so, some kind of large load happening outside / brownout?).
Just curious when the dips are and if there’s any pattern. (and if I also measured my home's current too could also differentiate the cause of a voltage dip).
