32 lines
777 B
Text
32 lines
777 B
Text
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/*
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Fade
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This example shows how to fade an LED on pin 9
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using the analogWrite() function.
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This example code is in the public domain.
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*/
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int brightness = 0; // how bright the LED is
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int fadeAmount = 5; // how many points to fade the LED by
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void setup() {
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// declare pin 9 to be an output:
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pinMode(9, OUTPUT);
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}
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void loop() {
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// set the brightness of pin 9:
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analogWrite(9, brightness);
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// change the brightness for next time through the loop:
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brightness = brightness + fadeAmount;
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// reverse the direction of the fading at the ends of the fade:
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if (brightness == 0 || brightness == 255) {
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fadeAmount = -fadeAmount ;
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}
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// wait for 30 milliseconds to see the dimming effect
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delay(30);
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}
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