const int hallSensors[] = {D1, D2, D3, D4, D5};
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
// Initialize the hall sensors as inputs
  for (int i = 0; i < 5; i++) {
    pinMode(hallSensors[i], INPUT);
  }

}

void loop() {
  // put your main code here, to run repeatedly:
for (int i = 0; i < 5; i++) {
    if (digitalRead(hallSensors[i]) == LOW) {
      Serial.println(i);
    }
}
delay(500);
}