YF-S201C Hall Effect Water Flow Meter Sensor วัดอัตราการไหลของน้ำ

• Ground
• VCC - supply voltage from 5 V to 24 V
• Signal - pulse output signal

volatile int NbTopsFan; //measuring the rising edges of the signal

int Calc;

int hallsensor = 2;    //The pin location of the sensor

 

void rpm()     //This is the function that the interupt calls

{

  NbTopsFan++;  //This function measures the rising and falling edge of the hall effect sensors signal

}

 

void setup() //

{

  pinMode(hallsensor, INPUT); //initializes digital pin 2 as an input

  Serial.begin(9600); //This is the setup function where the serial port is initialised,

  attachInterrupt(0, rpm, RISING); //and the interrupt is attached

}

 

 

 

void loop()

{

  NbTopsFan = 0;   //Set NbTops to 0 ready for calculations

  sei();      //Enables interrupts

  delay(1000);   //Wait 1 second

  cli();      //Disable interrupts

  Calc = (NbTopsFan * 60 / 7.5); //(Pulse frequency x 60) / 7.5Q, = flow rate in L/hour

  Serial.print(Calc, DEC); //Prints the number calculated above

  Serial.print(" L/hourrn"); //Prints "L/hour" and returns a new line

}