void setup() {
  pinMode(15, INPUT);
  Serial1.begin(115200);
  Serial1.println("Hello, Raspberry Pi Pico!");
}

void loop() {
  int pir = digitalRead(10);

  if (pir == HIGH) {
    Serial1.println("MOVEMENT DETECTED");
    delay(500);
  }
  else {
    Serial1.println("NO MOVEMENT DETECTED");
    delay(500);
  }
}