Hey I have little problem because when I plug cabel to (0-12), the program does not work but if I plug to 13 pin work, I have to buy new arduino or I can fix it ?(I have arduino uno)

I have a problem with pins

ToddL1962 August 23, 2021, 7:46pm 9

Actually I am wrong about that. Each LED is only on 25% of the time.

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