6-channel Energy Monitor

https://github.com/CircuitSetup/Expandable-6-Channel-ESP32-Energy-Meter
ESP32 3-channel Power logger

https://hackaday.io/project/187504-esp32-3-channel-power-logger
https://www.elektormagazine.com/labs/140409-power-meter

https://openenergymonitor.org/



https://hackaday.io/project/191761-pwrtool-500-featuring-the-flip-c3
