VideoLibrary

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.

PCB Builder: https://www.digikey.com/en/pcb-builder/?code=25db0660-7efe-11f1-9ede-d78bd2782cb0

6/5/2026 5:47:39 PM Share

Part List

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
CLAMP METER 400AC 400OHM RESFLUKE- 323CLAMP METER 400AC 400OHM RES31 - Immediate$199.99View Details
CURR SENSE XFMR 100A:0.05A 100A101990029CURR SENSE XFMR 100A:0.05A 100A0 - Immediate$9.90View Details
CURR SENSE XFMR 70A CHAS MNT101990065CURR SENSE XFMR 70A CHAS MNT95 - Immediate$6.90View Details
CURR SENSE XFMR 1800:1 20A CHAS101990061CURR SENSE XFMR 1800:1 20A CHAS216 - Immediate$6.90View Details
XIAO ESP32S3113991114XIAO ESP32S39652 - Immediate$7.49View Details
CONN JACK STEREO 3.5MM SMD R/ASJ-3523-SMT-TRCONN JACK STEREO 3.5MM SMD R/A79603 - Immediate$1.00View Details
RES 20 OHM 1% 1/8W 0603RNCP0603FTD20R0RES 20 OHM 1% 1/8W 06033068 - Immediate$0.10View Details
BREADBOARD GENERAL PURPOSE PTHDKS-SOLDERBREAD-01BREADBOARD GENERAL PURPOSE PTH2784 - Immediate$2.49View Details