#4.5.1.1. 예제 

#define greenPin 9

#define bluePin 10

#define redPin 11

void setup() {

  pinMode(redPin, OUTPUT);

  pinMode(greenPin, OUTPUT);

  pinMode(bluePin, OUTPUT);

}

void loop() {

  analogWrite(redPin, 255);

  analogWrite(greenPin, 0);

  analogWrite(bluePin, 0);

  delay(1000);

  analogWrite(redPin, 0);

  analogWrite(greenPin, 255);

  analogWrite(bluePin, 0);

  delay(1000);

  analogWrite(redPin, 0);

  analogWrite(greenPin, 0);

  analogWrite(bluePin, 255);

  delay(1000);

}