Kill-a-watt on sale
Pretty useful tool, and it's on sale right now. I am not financially affiliated with newegg or whomever makes the kill-a-watt.
Newegg.com - P3 Kill A Watt Electricity Load Meter and Monitor |
Wow, thats a pretty good price. However, they are sold out as of now.
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Kill-A-Watt EZ at Home Despot
FYI,
Kill-A-Watt EZ's are for sale at Home Despot for $24.87 each (plus tax). As far as I can tell, this is a standard price, not a sale price. http://www.homedepot.com/webapp/wcs/...03&marketID=87 I've finally purchased one and am now logging various appliances starting in the kitchen. Wow, the toaster sucks electricity! I do wish the Kill-A-Watt EZ displayed one more significant digit on the kiloWatt hour reading. Yes, I'm already wanting more precision and I've only had the gizmo for a couple of days. FWIW, Tim |
They're now $19.99 with free shipping at the Newegg link Wonderboy posted above.
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I'm going to wait until they come out with one that does real-time logging,
with a wireless/USB PC connection.. :) In the 40 dollar range would be nice. |
Connect a stereo FM transmitter to an amplified shunt and a voltage divider so it transmits the voltage and currents, then plug a stereo FM receiver into the line in port of your PC. Write a program to do real time DSP on the signals, calibrate it, and use it!
Stereo FM transmitters and receivers cost less than $10. A few dollars for additional parts and there's the hardware. It should be trivial to make it for under $30. |
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