//line to the project in the description
/*
  PIR sensor tester
 */

int ledpin =13;               //choose the pin for the LED
int inputpin = 2;             //choose the input pin (for Pin sensor)
int pirstate = LOW;           //we start, assuming no motion detected
int val = 0;                  // variable for reading the pin status

void setup() {
  pinMode(ledpin, OUTPUT);    // declare LED as output
  pinMode(inputpin, INPUT);    // declare sensor as input

  Serial.begin(9600);
}

void loop() {
  val = digitalRead(inputpin);    //read input value
  if (val == HIGH) {            // check if the input is HIGH
    digitalWrite(ledpin, HIGH);  //turn LED ON
    if(pirstate == LOW) {
      // we have just turned on
      Serial.print("Motion detected");
      // we only want to print on the output change, not state
      pirstate = HIGH;
    }
  } else {
    digitalWrite(ledpin, LOW); //turn LED OFF
    if (pirstate == HIGH){
      // we have just turn of
      Serial.println("Motion ended");
      // we only want to print on the output change, not state
      pirstate = LOW;
    }
  }
}