Hi I’m having a relatively common problem with a water sensor, it’s corroding. The pin (+voltage) to the sensor is only turned on for 10 millis once a day but after a month (only 30 sensor readings) it’s already corroding. Looks like there’s about 0.02 V across the pin to ground.
I’m guessing that the constant low voltage to the sensor is causing slow corrosion.
Is there any way to complete block power that’s less than 1V, but allow anything over 3V?
those arent hard numbers, just examples of what might work. Hoping there’s a simple hardward solution to this, but open to suggestions.
Appreciate any advice and help
(attached is a pic of the corrosion. Not failing yet but it will soon)