How to fade an LED - Arduino Tutorial

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Learn how to fade an LED with Arduino.

Ardumotive, the Greek Arduino Workshop!

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My question is, why can't I use the built in LED to do this experiment? I tried, and don't work, but don't understand why. Its a digital output, just as the one you connect externally.

danielrice
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The lowest dim point is not a smooth transition. It looks like a blink at that stage.

knowall
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How I can do the same but with a 5V LED?

britman
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