The new sensing unit finally evolved from a breadboard prototype to a nice and shiny PCB.
The feedback works nice and sensitive. It is able to capture the raw water contact too. and reacts to tiny single discharges.
I won't go into details about the parts but the board offers a fully isolated high side shunt current feedback. A linear optocoupler is used for isolation. The ESP is now fully disconnected from the pulseboard.
PS: Thanks to PCBway for the extra boards.
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