By counting the pulses from the output of the sensor, we can easily calculate the water flow rate (in litre/hour – L/hr) using a suitable conversion formula. The Arduino Sketch (code ... currentTime; ...

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...

it would be impossible to tell the difference between a legitimate lower limit reading on a sensor and a broken loop wire. So how do you incorporate a 4-20 mA device into your latest Arduino ...