(PWM)Pulse with Modulation is a kind of technique for getting analog output results with digital control controller used to form a square wave, a signal switched between 0 or 1 or On / Off.
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int brightness = 0; int fadeAmount = 5; // set the value of fadeAmount void setup() { pinMode(9, OUTPUT); //defines the pin 9 to output; } void loop() { analogWrite(9, brightness);// set the brightness; brightness = brightness + fadeAmount;//change the brightness if (brightness == 0 || brightness == 255) { fadeAmount = -fadeAmount ; } delay(30); // Set the Delay } |
Download the sample code here > 14Core_PWM_Control
Starter #3 Pulse with modulation or PWM in Arduino
