• monobot@lemmy.ml
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    11 months ago

    Why wouldn’t they? It just measures electrical resistance of the soil, less moisture means more resistance. Nice and simple.

    I have cheap one connected to arduino, and small water pump conected to it too. It works nicely.

    • LuckyBoy@lemmy.world
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      11 months ago

      The soil composition, minerals and nutrients can change the eletrical resistance. Thats what i read somewhere.