Sounds like he’s referring to this one, as it’s the only one on the page he quoted from…
https://learn.openenergymonitor.org/electricity-monitoring/ac-power-theory/arduino-maths
Sounds like he’s referring to this one, as it’s the only one on the page he quoted from…
https://learn.openenergymonitor.org/electricity-monitoring/ac-power-theory/arduino-maths
