void setup() {
    pinMode(8, OUTPUT);
}

void loop() {
    digitalWrite(8, HIGH);  // Sets pin 8 HIGH (turns on LED)
    delay(1000);             // Wait for 1 second (1000 milliseconds)
    digitalWrite(8, LOW);   // Sets pin 8 LOW (turns off LED)
    delay(1000);             // Wait for 1 second
}