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thank you for your help. For the first time I would use only three small leds or one with four contacts, just to try how everything works. I have few other questions, maybe you have zens circuit drawn with some software? Maybe it would help me to understand all connections. Maybe some other chip cou...

I was looking at Zen's scheme and I am wondering, if I would make it and programmed the chip with your program, would it work ? as far is a saw on the internet everywhere transistors is being used in led output. so i am quite confused.

Hi,
I am quite interested in this project. Maybe somebody have scheme and PCB layout ?