I found this schematic for a water level indicator:
I would like to modify it some. Namely, instead of illuminating LEDs I would like to make it a variable resistor (aka make a voltage divider circuit out of it). I would be using it in the same application though (i.e. stainless screws in a PVC pipe to sense water level by contact method).
Here is the application this schematic came from: sensor application
In my application I want to supply Vcc with 5VDC and have the circuit divide that to an analog input on an Arduino.
I redlined the schematic to what I think might work, but I'm not an analog circuits expert. I would appreciate any guidance or links or ??? whatever can help me out. Here is my redline (PS the R value of the resistor(s) i've added is TBD):