As you can see the circuit is very simple and only consists of two IR sensors, an Arduino Uno, LCD display and a breadboard. Also note that, to power this circuit you will need an external 12V power ...

When the liquid level falls beyond the longer (lower) electrode, the relay circuit is interrupted and the pump motor automatically stops. The motor is not restarted until the level reaches the ...

We must ensure the components are connected correctly as per the above circuit diagram. Note that we can't directly drive the water pump from the Arduino UNO R4 Wi-Fi peripheral pins. For that, we ...

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