I've found this scheme for a water-level.
It has only visual alarm but with a NPN it's possible to connect a buzzer through pin12.
What I want to do is connect a pump that works like scheme:
ON - when level
It has only visual alarm but with a NPN it's possible to connect a buzzer through pin12.
What I want to do is connect a pump that works like scheme:
ON - when level
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