43 lines
1 KiB
Text
43 lines
1 KiB
Text
/*
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Fading
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This example shows how to fade an LED using the analogWrite() function.
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The circuit:
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* LED attached from digital pin 9 to ground.
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Created 1 Nov 2008
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By David A. Mellis
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Modified 17 June 2009
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By Tom Igoe
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http://arduino.cc/en/Tutorial/Fading
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*/
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int ledPin = 9; // LED connected to digital pin 9
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void setup() {
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// nothing happens in setup
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}
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void loop() {
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// fade in from min to max in increments of 5 points:
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for(int fadeValue = 0 ; fadeValue <= 255; fadeValue +=5) {
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// sets the value (range from 0 to 255):
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analogWrite(ledPin, fadeValue);
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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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// fade out from max to min in increments of 5 points:
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for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) {
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// sets the value (range from 0 to 255):
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analogWrite(ledPin, fadeValue);
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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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}
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