Keyestudio PIR Test.ino

int sensorPin = 3;
int indicator = 13;

void setup() {
  pinMode(sensorPin, INPUT);
  pinMode(indicator, OUTPUT);
  Serial.begin(9600);
}
 
void loop() {
  int state = digitalRead(sensorPin);
  digitalWrite(indicator, state);
  if(state == HIGH) {
    Serial.println("Somebody is in this area!");
  } else {
    Serial.println("No one!");
  }
  delay(500);
}