Energy Meter

An Arduino energy monitor, constructed for a Trinket

See also:

http://openenergymonitor.org/emon/buildingblocks/how-to-build-an-arduino-energy-monitor-measuring-current-only

As implemented by:

http://www.homautomation.org/2013/09/17/current-monitoring-with-non-invasive-sensor-and-arduino/

https://www.hackster.io/yleguesse/spark-non-invasive-smart-electricity-meter-670862

Calibration is documented at:

http://openenergymonitor.org/emon/buildingblocks/calibration