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) uses the ...

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close ... whereas R3 is an ...

Now, moving on to the sensors. They fall into two categories: input and output. Inputs are components that send data to the Arduino. They're either digital (only sends HIGH or LOW signals ...