Strider,
Last time I tuned into your project, you were still wrestling with the problem of measuring power. As I recall, you were measuring current and then multiplying by the assumed voltage, and ignoring PF issues.
I got to thinking about this and just remembered that there was a project call
Tweet-a-Watt, where a guy used an off-the-shelf Kill-a-Watt and hacked into it and made it send out power consumption info via Twitter.
So, I was thinking that he must have found some way to intercept the power data from the Kill-a-Watt while it was on it's way to the LCD and decoded it and sent that on to Twitter.
I went to Tweet-a-Watt to see just how he did it, and NO I was wrong, he had a XBee...
.
...pick up the current and the voltage info from the Kill-a-Watt...
... and sent it on to a computer where a Python Script takes care of the dirty work.
Details of this approach can be found here.
Best Regards,
-AC_Hacker