#5.3.2. 3색 LED

#define GREEN_PIN 9

#define BLUE_PIN 10

#define RED_PIN 11

void setup() {

  pinMode(RED_PIN, OUTPUT);

  pinMode(GREEN_PIN, OUTPUT);

  pinMode(BLUE_PIN, OUTPUT);

}

void loop() {

  analogWrite(RED_PIN, 255); // 빨간색

  analogWrite(GREEN_PIN, 0);

  analogWrite(BLUE_PIN, 0);

  delay(1000);

  analogWrite(RED_PIN, 0); // 초록색

  analogWrite(GREEN_PIN, 255);

  analogWrite(BLUE_PIN, 0);

  delay(1000);

  analogWrite(RED_PIN, 0); // 파랑색

  analogWrite(GREEN_PIN, 0);

  analogWrite(BLUE_PIN, 255);

  delay(1000);

}