Internet-Connected Smart Water Meter

details

This project is about smart water meter that makes people read the water meter and display on LCD through Internet.

components: 1. An Arduino UNO R3 board

2. Arduino Ethernet Shield R3

3. A liquid flow sensor

4. A Hitachi HD44780 DRIVER compatible LCD Screen (16 x 2)

5. A 10K ohm resistor

6. A 10K ohm potentiometer

7. Few Jumper wires with male and female headers

8. A breadboard

Hardware :

Connect positive terminal of the water flow sensor to Arduino 5V.
Connect negative terminal of the water flow sensor to Arduino GND.
Connect DATA terminal of the water flow sensor to Arduino digital pin 2.

Code :

int pin = 2; //Water flow sensor attached to digital pin 2
volatile unsigned int pulse;
const int pulses_per_litre = 450;
void setup()
{
   Serial.begin(9600);
   pinMode(pin, INPUT);
   attachInterrupt(0, count_pulse, RISING);
}
void loop()
{
   pulse = 0;
   interrupts();
   delay(1000);
   noInterrupts();
   Serial.print("Pulses per second: ");
   Serial.println(pulse);
}
void count_pulse()
{
   pulse++;
}

Result :

URL :https://www.packtpub.com/books/content/internet-connected-smart-water-meter-0