void setup() 
{
  pinMode(15, INPUT);
  pinMode(10, OUTPUT);
  Serial1.begin(2);
  Serial1.println("Hello, Raspberry Pi Pico!");
}

void loop()
 {
  int pir=digitalRead(15);
  if (pir==HIGH){
    Serial1.println("Motion Detected");
    digitalWrite(10, HIGH);
    delay(1000);
  }
  else
  {
    Serial1.println("Motion Detected");
    digitalWrite(10, LOW);
    delay(1000);
  }
}