This video guide shows you how to build your own energy meter for use around the home using an Arudino and a current transformer / CT. Since this meter only monitors the supply current, it works well for loads which operate close to unity power factor (purely resistive). It can easily be connected to a multi-plug to monitor a few devices or to your home's DB to monitor your entire home's consumption and calculate your monthly electrical bill. For more information on how it works and some of its limitations, visit the full text guide on my blog - http://www.the-diy-life.com/simple-arduino-home-energy-meter/ Download the code here - http://www.the-diy-life.com/downloads/PowerMeter.zip Components Required & Purchase Links Arduino Uno - https://amzn.to/2BusAFK LCD Shield - https://amzn.to/2w18UEt CT - Talema AC1030 (See blog for different options) SCT-013-000 100A - https://amzn.to/2MHR6HR 56Ω Burden Resistor - https://amzn.to/2OOMddt 10µF Capacitor - https://amzn.to/2N51TJ3 2 x 100K Divider Resistors - https://amzn.to/2vZuN75 Important - Do not attempt to work with electricity if you do not know what you are doing or is your local regulations prohibit you to do so. You may need to ask a qualified electrician for assistance.