Has any one here had any experience of making their own CT type energy monitor. I was thinking along the lines of a Sonoff device (maybe a TH16) with a clamp type CT that can be repurposed/reprogrammed with Tasmota and the data can be MQTT'ed into Node red. Just want to record usage data so I can see where all the kWh's are going.
Homebrew PZEM with ESP Wemos Di Mini here. MQTT, Node-RED, IndluxDB and Grafana. There are more graphs showing costs, savings per day, energy per day. Once you pull the figures from the PZEM through MQTT, you can manipulate and display as you want.