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Fading LED

Connect an LED to digital pin 3

Code

void setup()
{
pinMode(3, OUTPUT);
}

void loop()
{
for (int a = 0 ; a < 256 ; a++)
{
analogWrite(3, a);
delay(5);
}
for (int a = 255 ; a >= 0 ; a--)
{
analogWrite(3, a);
delay(5);
}
delay(200);
}
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