• mertn@lemmy.world
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    11 months ago

    A soil moisture measuring device to tell when plants need watering. 2 for $10 on amazon.

      • mertn@lemmy.world
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        11 months ago

        Yes they work well. No batteries needed. They give clear indication of dry/moist/soggy. I was over-watering and killing plants before I bought one.

      • 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.