WARNING: This design appears to be potentially dangerous. Utmost care should be taken, and ideally professional advice sought, before attempting to construct this item. Moderator (RW)
Note from maker of "shield": Yes, this is not safe, so do not build this if you dont understad the risks. I personally will run the Pi over WLAN, but that still doesnt take all the risks away. If broader interest for this "shield" I will fix a safer version, no problem. For now v1.0 is quick and dirty and focus is on power measurment capabilites and ADE7878A capabilites.
I made this module as a bolt on (shield) to RPI B+
Don't know how to edit this wiki so, bear with me before I get this under control.
I logged my energy before via an optical sensor to the meter supplied by the power company , but wanted to see this now on a phase level, that's why I developed this. The Optical sensor giving kWh aggregated will be kept for calibration and aggregated power. I log every minute to an mysql server and via another program I can draw curves for any period of time I have collected data for. This includes also a lot of other parameters like temperature etc.
It's using the Analog Devices ADE7878A for Polyphase Multifunction Energy Metering.
Schematic File:ADE7878A rpi.pdf