const byte sensorPin = 2;
const unsigned long warmupMs = 60000;
int previous = -1;
bool warmedUp = false;

void setup() {
  pinMode(sensorPin, INPUT);
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(9600);
  Serial.println("Allow one minute for PIR warm-up");
}

void loop() {
  if (!warmedUp) {
    if (millis() < warmupMs) return;
    warmedUp = true;
  }
  const int state = digitalRead(sensorPin);
  digitalWrite(LED_BUILTIN, state);
  if (state != previous) {
    Serial.println(state == HIGH ? "Motion output active" : "Motion output clear");
    previous = state;
  }
}