Moisture Meter Data and a stability question

[ksdehoff]

Hey all:

I'm wondering if anyone has any data to compare their moisture meter against mine. I'm unclear as to what values I should be seeing and my data seems to be all over the map. I'm wondering if I've gotten something wrong.

The temperature sensor on the board is rock solid and is buried beneath the soil same depth about 2 feet away from this and I'm driving both via the 6 port hub.

I did test the sensor overnight in a glass of water first as suggested and had a rock solid reading - not sure what's going on here or if moisture in my soil may be jumping around this much.

Ken

 

[ericvic]

Ken,

It looks like you make be seeing the grounding problem that was reported in this thread.

Eric

 

[ksdehoff]

Eric:

Radio Shack #273-1374 appears to have done the trick for me. I've taken the absolute value of the sensor. Does the sensor work as getting closer to 0 is drier??

Ken