void setup() {
 pinMode(0, OUTPUT);
 pinMode(1, OUTPUT);
 pinMode(2, OUTPUT);

}

void loop() {
for(int r=0;r<=255;r=r+5)
{
 for(int g=0;g<=255;g=g+5)
{
  for(int b=0;b<=255;b=b+5)
 {
  analogWrite(0,r);
  analogWrite(1,g);
  analogWrite(2,b);
  delay(200);
  }

}

}


}