onboard LED and motion detector

I need some code for a motion detector to turn on the onboard LED.

Here you go:

void loop()
   if (getMotionState() == DETECTED) {
   } else {

I'm new to arduino the does not work.

I'm testing a HC-SR501 motion detector.

If I upload to a nodemcu v3 it randomly kernel panics my macbook air. If does not turn on the onboard LED or print to the serial monitor.

It work on my Uno.

int pirPin = 2;    //the digital pin connected to the PIR sensor's output
int ledPin = 13;
int val;


void setup(){
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);

void loop(){

  val = digitalRead(pirPin);
  if(val == HIGH)
    Serial.println(" HIGH");
    digitalWrite(LED_BUILTIN, HIGH);
    digitalWrite(LED_BUILTIN, LOW);
    Serial.println(" LOW");



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If you want the code written for you, go here. But don't be surprised people want to get some money for it.