My soil moisture value bounces all over the range (from 200 - 1000) even when the readings are taken 5 seconds apart and the probe has not moved.
My understanding is that the UTM contacts the screws on top of the soil moisture tool head and the signal is delivered that way. I would think that would be problematic but I could be wrong.
Does anybody know of a way to prevent the values from bouncing around? Has anybody made a change that has given them reliable values?
I am looking at replacing the spark fun soil moisture sensor with a capacitive sensor from DF Robot. That will require some modification of the tool as they don’t mount the same. The electronics at the top of the sensor will also need to be waterproofed so I will have to develop a design that accounts for that.
Please let me know if you have experienced the same issue and whether you solved the problem.