Arduino Nano

My teacher Tero Karvinen kindly lent me an Arduino Nano. I wanted to play around with it a bit so I did a simple hello world code, which used delayMicroseconds function.

DelayMicroseconds(0) caused unwanted flashing in the LED so don't use values lower than 3.

 void smoothblink() {
   for (int i=10;i<600;i++) { 
    digitalWrite(ledPin, HIGH);
    delayMicroseconds(i);
    digitalWrite(ledPin, LOW);
    delayMicroseconds(600-i);
  }
  for (int i=10;i<600;i++) {
    digitalWrite(ledPin, HIGH);
    delayMicroseconds(600-i);     
    digitalWrite(ledPin, LOW);
    delayMicroseconds(i);
  }
  delay(100); // led off for a while
}