const int ledPin = 8;
unsigned long previousMillis = 0;
const long interval = 150; // Blink-Intervall in Millisekunden
bool ledState = false;

void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop() {
  unsigned long currentMillis = millis();
  
  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;  // Zeit merken
    ledState = !ledState;            // LED-Zustand umkehren
    digitalWrite(ledPin, ledState);  // LED an- oder ausschalten
  }
}