A3144 Hall Effect Manyetik Alan Sensörü

const int hallPin = 2; // Kesme pini
volatile unsigned int pulseCount = 0;

void countPulse() {
  pulseCount++;
}

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

void loop() {
  delay(1000);
  noInterrupts();
  unsigned int rpm = pulseCount * 60;
  pulseCount = 0;
  interrupts();
  Serial.print("Motor Hızı: "); Serial.print(rpm); Serial.println(" RPM");
}