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M Thread Starter maxpower097 Joined Feb 20, 2009 816 Jan 5, 2011 #1 ....................................................... Last edited: Jan 16, 2011
beenthere Joined Apr 20, 2004 15,819 Jan 5, 2011 #2 You might try another method - http://www.cheapvegetablegardener.com/2009/03/how-to-make-cheap-soil-moisture-sensor.html The sponge might do okay. You can rig an experiment pretty easily. I would not expect to find a linear response to moisture. Use AC to prevent plating one of the electrodes.
You might try another method - http://www.cheapvegetablegardener.com/2009/03/how-to-make-cheap-soil-moisture-sensor.html The sponge might do okay. You can rig an experiment pretty easily. I would not expect to find a linear response to moisture. Use AC to prevent plating one of the electrodes.
M Thread Starter maxpower097 Joined Feb 20, 2009 816 Jan 5, 2011 #3 ....................................................... Last edited: Jan 16, 2011
be80be Joined Jul 5, 2008 2,072 Jan 5, 2011 #4 A sponge will rot real fast in dirt two pieces of stainless steel would last a lot longer
blueroomelectronics Joined Jul 22, 2007 1,757 Jan 5, 2011 #5 be80be said: A sponge will rot real fast in dirt two pieces of stainless steel would last a lot longer Click to expand... I was thinking the same thing.
be80be said: A sponge will rot real fast in dirt two pieces of stainless steel would last a lot longer Click to expand... I was thinking the same thing.
M Thread Starter maxpower097 Joined Feb 20, 2009 816 Jan 6, 2011 #6 ....................................................... Last edited: Jan 16, 2011