Hi all, Im actually writing some tutorial codes with my arduino UNO. . they were good at start now when i put some own modifications, it seems not working. Im quite afraid it is coming from hardware. A simple sketch, is i pressed the pushbutton to light all my 5 leds, and i pressed the same to put…

Unwanted shut down of outputs.

liuzengqiang October 4, 2012, 7:51pm 6

Do you have resistors in series with your LEDs?

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