kill a watt めも

http://www.ladyada.net/make/tweetawatt/solder.html
http://www.ladyada.net/images/wattcher/newkaw.jpg
http://www.mikesmicromania.com/2013/03/kill-watt-circuit-analysis.html
http://matthiaslee.com/node/49

http://www.appropedia.org\Wireless_Upgrade_for_Typical_Consumer_Power_Meter

http://techluck.com/cgi-bin/YaBB.pl?num=1313027011