YF-S201 1/2 inç Hall Efektli Su Akış Debisi ve Hacim Ölçer Sensör

const int flowPin = 2;
volatile int pulseCount = 0;
float flowRate = 0.0;
float totalMilliLitres = 0;
unsigned long oldTime = 0;

void pulseCounter() {
  pulseCount++;
}

void setup() {
  Serial.begin(9600);
  pinMode(flowPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(flowPin), pulseCounter, FALLING);
}

void loop() {
  if (millis() - oldTime > 1000) { // Her saniyede bir hesapla
    detachInterrupt(digitalPinToInterrupt(flowPin));

    // YF-S201 kalibrasyon faktörü: 7.5
    flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / 7.5;
    oldTime = millis();
    
    float flowMilliLitres = (flowRate / 60) * 1000;
    totalMilliLitres += flowMilliLitres;

    Serial.print("Debi: ");
    Serial.print(flowRate);
    Serial.print(" L/dk | Toplam: ");
    Serial.print(totalMilliLitres / 1000.0, 2);
    Serial.println(" Litre");

    pulseCount = 0;
    attachInterrupt(digitalPinToInterrupt(flowPin), pulseCounter, FALLING);
  }
}