Measuring flow sensor to calculate the volume of water

We need to take automatic measurements from the water that we're using in the home. For this project, we will use a sensor to perform this reading and make the reading of measurement automatic.

To make this project, we need the following materials:

Flow Water Sensor and Arduino UNO board:

Hardware connections

Now we have the connections for out flow sensor. We can see that it has three pins -- the red pin is connected to +VCC 5 volts, the black one is connected to GND, and the yellow pin is connected to pin number 2 of the Arduino board as seen in the following image:

Reading the sensor signal

An interrupt is used for the pulses generated by the passage of water to be accounted as follows:

attachInterrupt(0, count_pulse, RISING); 

The interruption is of type RISING counts the pulses that pass from a low state to a high:

Function for counting pulses: 
 
voidcount_pulse() 
{ 
pulse++; 
}