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Bert Van Den Berg
10/27/05 02:36
Read: 726 times
New Zealand

#103015 - Water for a short while and compare
Responding to: Erik Malund's previous message

I supposed that one non-calibration method would be to make a soil resistance measurement, water for a few minutes and make a second soil resistance measurement. If the sensor was near the surface it should change quite radically after a little watering only if the additional water made a significant change.

This method could be self learning so that after a few "test runs" the micro can self-calibrate for the soil conditions and get smarter, eventually not having to do any more pre-watering.

Am I making sense?

Cheers from New Zealand where I have never seen a sprinkler (but had to clean bugs out of plugged sprinkler heads all the time in Riverside, California).


List of 16 messages in thread
soil dampness      Erik Malund      10/26/05 11:27      
   Conductivity?      Sasha Jevtic      10/26/05 11:58      
      Conductivity      Andy Neil      10/26/05 14:28      
   addendum      Erik Malund      10/26/05 12:34      
      Nutsy idea?      Craig Steiner      10/26/05 14:07      
      Configuration/calibration      Sasha Jevtic      10/26/05 14:40      
         that would not be calibration      Erik Malund      10/26/05 15:01      
            humidity      Terry Lingle      10/26/05 22:42      
      Water for a short while and compare      Bert Van Den Berg      10/27/05 02:36      
   Another idea      Bert Van Den Berg      10/27/05 13:17      
   Spatially Distributed Soil Measurements      Bruce Bailey      10/27/05 13:51      
      I needed that      Erik Malund      10/27/05 14:32      
         There is Yet Hope      Bruce Bailey      10/27/05 17:20      
   soil dampness      Bruce Revor      10/27/05 17:07      
      Gypsum block sensor      Rob Vassar      10/27/05 21:27      
   Capacitance.      Steve M. Taylor      10/28/05 12:36      

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