int pir = 0;
int count =0;
String vel;
int bus=0;

void setup() {
  pinMode(9, INPUT);
  pinMode(2, OUTPUT);
  Serial.begin(9600);
  // put your setup code here, to run once:

}

void loop() {
  vel =Serial.readString();
  if(vel=="count\n"){
    Serial.println(count);
  }
  pir = digitalRead(9);
  if (pir == HIGH){
    digitalWrite(2, HIGH);
    if(bus==0){
    Serial.println("motion");
    count = count+1;
    bus = 1;
    }
  }
  if(pir == LOW){
    digitalWrite(2,LOW);
    if(bus==1){
      bus=0;
    }
        // Serial.println("nooo");

  }

  // if(Serial.readString()=="count"){
  //   Serial.println(count);
  // }
  // put your main code here, to run repeatedly:

}