In this Instructable, I will show you how to make an Arduino based Multifunction Energy Meter.

This little Meter is a very useful device that displays important information on electrical parameters. The device can measure 6 useful electrical parameters: Voltage, Current, Power, Energy, Capacity, and Temperature. This device is suitable only for DC loads such as Solar PV systems. You can also use this meter for battery capacity measurement.

The Meter can measure up to voltage range from 0 – 26V and a maximum current of 3.2A.