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2020-05-17 at 9:06 AM #14165
I had seen that post on the $3 EC meter several months ago and experimented with building a variation of that sensor but had little success. Thought that it might be better to buy something that already works, to better understand it, and not try to reinvent the wheel.
I would love to see what you come up with for a ModularSensors class. I might give it another try.