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Currently Playing: Using Current Transformers for Home Energy Monitoring - The Byte Sized Engineer | DigiKey

I’m tired of electricity bills that only show total usage, making it hard to identify energy-hungry appliances like HVAC systems or EVs. I’m ready to do something about this problem so in this video, I'll show you how to build a whole-home energy-monitoring system using current transformers to track your usage and find ways to save. Related Link: https://www.digikey.com/en/maker/projects/build-a-diy-whole-home-energy-monitor-with-esphome-and-home-assistant/be84610c06894f87a0f75bd443de7992 PCB Builder: https://www.digikey.com/en/pcb-builder/?code=25db0660-7efe-11f1-9ede-d78bd2782cb0 Learn more: Download all design files for this project from the github repo https://github.com/bytesizedengineering/home-energy-monitoring Maker.io - https://www.digikey.com/en/maker DigiKey’s Blog – TheCircuit https://www.digikey.com/en/blog Connect with DigiKey on Facebook https://www.facebook.com/digikey.electronics/ And follow us on X https://x.com/digikey https://www.youtube.com/@bytesizedengineering Product: FLUKE-323 https://www.digikey.com/en/products/detail/fluke-electronics/FLUKE-323/3739491 100A current transformer9 https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/101990029/5488226 70A current transformer https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/101990065/5487441?s=N4IgTCBcDaIIwFYCcB2AtHAzHAbGgcgCIgC6AvkA 20A current transformer https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/101990061/5487437 XIAO ESP32S31 https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/113991114/19285530?s=N4IgTCBcDaIIwFYCcB2AtHOBmJTNwBY0A5AERAF0BfIA 3.5mm trs jack https://www.digikey.com/en/products/detail/same-sky-formerly-cui-devices/SJ-3523-SMT-TR/281297?s=N4IgTCBcDaIMIAUC0BmArGFBlAUnAKkgHIAiIAugL5A 20Ohm SMD resistor https://www.digikey.com/en/products/detail/stackpole-electronics-inc/RNCP0603FTD20R0/2240076?s=N4IgTCBcDaIEoDkDCAFADANjQZgGIBUARMNONJfAWgUJAF0BfIA Solderable Breadboard https://www.digikey.com/en/products/detail/digikey/DKS-SOLDERBREAD-01/21274484 Chapters: 00:00 Intro 02:54 How to read a current transformer 05:15 Setting up the microcontroller 08:05 Adding devices to Home Assistant 10:47 Calibrating with a known load 13:25 Let’s design a PCB! 14:53 Installing CTs in my panel 18:08 Seeing beautiful graphs!