I've got a set of pH and EC water sensors that is being supplied 5v/1A power (dedicated, not off Arduino) and reading from Arduino mega's analog 3 and 4 pins. Soon as I drop both sensors in the same batch of water, both sensor readings drop to 0 canceling each other out. I've narrowed the issue dow…

Analog pins cancel sensor values out

CrossRoads April 28, 2017, 4:34pm 9

You put meter in series between the Drain and where the drain connects?

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