int ledPin = 4; // LED
int PirPin = 2; // PIR sensor
int PirState = LOW; // sensor state
int i = LOW;

void setup() {
pinMode(ledPin, OUTPUT);
pinMode(PirPin, INPUT);
digitalWrite(ledPin, LOW);
Serial.begin(9600);
}

void loop() {
i = digitalRead(PirPin);
if (i == HIGH){
  digitalWrite(ledPin, PirPin);
  if (PirState == HIGH){
    Serial.println("Motion detected!");
    PirState = LOW;
  }
} else {
  digitalWrite(ledPin, LOW);
  if (PirState == LOW){
    Serial.println("No motion");
    PirState = HIGH;
  }
}
}
// made by: pio200