[Boatanchors] Long-term AC voltage monitor

[Robert Nickels]

On 1/5/2015 9:32 AM, Rick Poole WA1RKT wrote:
> Any suggestions?
The simplest,  accurate solution is to buy a "Killawatt" (P4400) from 
your local home improvement store.   For less than $20 it's an 
invaluable measurement tool for AC volts, amps, and watts - but it 
doesn't communicate or store AC voltages over time.

There have been attempts to do so, like the Adafruilt "Tweet-a-Watt" 
wireless method, but it's complicated, not cheap, and by some reports, 
doesn't work all that well.

If you really need long-term monitoring, have a look at these cheap DC 
voltage dataloggers being sold for around $55 on eBay:

http://www.ebay.com/itm/BDV01-DC-Voltage-Data-Logger-USB-0-30V-0-04V-resolution-64K-1-sec-samp-LED-alarm-/151323703157

Connecting one to an unregulated DC power supply would provide a DC 
signal proportional to AC line voltage with minimal effort, and the 
software and configurable features look pretty useful.

73, Bob W9RAN