grayson_o
Today, I built my EC meter out of an electrical cord, as described in the guide that I have linked to previously. Because the shape and spacing of electrical sockets is standardized, this makes an extremely cheap and easy EC sensor, but should be as accurate as ones bought online (which can cost up to $200). I also finished writing the first version of the code, but I will have to modify it to include support for the PiFace module that I will be using as an analog input device, as the Pi natively has no analog-to-digital converters.
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