全彩LED

// Init the Pins used for PWM

const int redPin = 9;

const int greenPin = 10;

const int bluePin = 11;

void setup(){

Serial.begin(9600);

pinMode(redPin, OUTPUT);

pinMode(greenPin, OUTPUT);

pinMode(bluePin, OUTPUT);

}

void loop(){

//用analogWrite做混色

for(int a=0;a<256;a+=4){

for(int b=0;b<256;b+=5){

for(int c=0;c<256;c+=6){

analogWrite(redPin, a);

analogWrite(bluePin, b);

analogWrite(greenPin, c);

delay(100);

}

}

}

//用digitalWrite控制HIGH/LOW

digitalWrite(redPin, HIGH);

digitalWrite(greenPin, LOW);

digitalWrite(bluePin, LOW);

delay(1000);

digitalWrite(redPin, LOW);

digitalWrite(greenPin, HIGH);

digitalWrite(bluePin, LOW);

delay(1000);

digitalWrite(redPin, LOW);

digitalWrite(greenPin, LOW);

digitalWrite(bluePin, HIGH);

delay(1000);

}