Hi I need to detect if a coffee machine breaker switch is ON or OFF, with an Arduino Uno. The voltage on the breaker switch is 220Vac What is the best way to do this? I tried with a non-invasive current sensor (SCT-019), but I can't seem to detect any current flow. I know i could do this with a…

[Solved] Best way to detect if Breaker Switch is ON

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