// 中間色をつくる
void setup()
{
}

void loop()
{
  analogWrite(11,0);  //徐々に明るくなる
  delay(100);  
  analogWrite(11, 50);
  delay(100);  
  analogWrite(11, 100);
  delay(100);  
  analogWrite(11, 150);
  delay(100);  
  analogWrite(11, 200);
  delay(100);  
  analogWrite(11, 255);
  delay(100);  
}