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Fwd: Re: Fwd: Re: SOWACS Fwd: gypsum block sensor


Pretty mugwaze writes to the sowacs list:
===8<==============
 The soil is kind of loamy clayish when wet, I am
using 2V ac voltage and the block which has 6mm apart
electrodes is about 5 by 5cm which is the same size as
the 1.2cm and I am using a frequency of 2kHz for both
and also how can I make a this power supply to provide
the ac voltage. Is it possible that I can generate an
ac voltage from a pic, since the PIC can only take
from 0 to 5V will this positive sine wave still do.


===8<==============
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