Pulsing/fading digital pin Arduino

Hello yet i have another question :).

Does somebody already got it working to fade/ pulse a led connected to a digital pin(not PWM) on Arduino?

My Problem are the 60 frames per second but maybe iam just stupid :D!

Would be very thankful about any idea



Obviously this is some arduino hack. I doubt u can set a digital io via rs232 quick enough to simulate a pwm. If this is what u meant.

Yep that what i mean.
Seems like i have to get into that code.

Thank you