Metering

So I finally got round to wiring in the 'Teleinfo' shield into my EDF meter (see my earlier post for more info) and left it running while we're away. Hacked up an initial couple of graphs using trusty gnuplot: exhibits A and B -

It's rather easy to spot where the fridge-freezer kicks in, but more worrying is the fact that the baseline never dips below 170VA. The only things that should have been running in that time was my via-eden server, with one HDD, the livebox and samknows monitoring box. I suspect I need to investigate more.

Made a minor hack to the shield as digi-6 is used by the LED on a nanode - but digi-7 is free.
Details were tweeted over here. Next up is to get it sending the info out to main box (well, another nanode or my bifferboard) and spitting to pachube and / or a jeelabs display board.