Now, the water level begins to decrease and the shorter sensor will be no longer in contact with the water, but IC1C output will be hold high by the signal return to pin #5 of IC1B, so the pump will ...
Keeping a tree watered is the best way to ensure a long life, but it can be difficult to see the water level sometimes, which is why blogger Eric Ayars created a reminder system with an Arduino. Using ...
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