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Nov 14 '20 at 22:58 comment added R0b0tn1k Well weasel, if you're willing to put your answer in the answer field instead of a comment, I'm willing to give you the points. Thank you sir!
Nov 14 '20 at 22:52 comment added Weasel Squeezer I think you multiply the voltage reading by 2.38 (which is 100%/(71%-29%)) and subtract whatever constant gives you 29% before it goes to the graphing routine, then flipping the axis so 0 % - 100% is bottom to top. Not sure if I'm saying this right, but you'll figure it out!
Nov 14 '20 at 22:40 comment added Weasel Squeezer Well, not if you rename it a Soil Dryness Sensor. Yep, flip on X-axis OR adjust range so that the voltage now at 71% is really zero, and voltage now at 29% will show as 100%
Nov 14 '20 at 22:14 comment added R0b0tn1k Pulled it out, dried it and it reported 71%. It's now submerged in a glass of water and it says 29%? So it's inverted then?
Nov 14 '20 at 20:29 history answered Weasel Squeezer CC BY-SA 4.0