volatile float m;

void setup() {
  // put your setup code here, to run once:
  analogWrite(11,0);
  analogWrite(10,0);
  analogWrite(9,0);
}

void loop() {
  // put your main code here, to run repeatedly:
  m=0;
  for(int i=0;i<256;i++){
    analogWrite(11,m);
    m+=1;
    delay(30);
  }
  delay(1000);
  analogWrite(11,0);
  m=0;
  for(int i=0;i<256;i++){
    analogWrite(10,m);
    m+=1;
    delay(30);
  }
  delay(1000);
  analogWrite(10,0);
  m=0;
  for(int i=0;i<256;i++){
    analogWrite(9,m);
    m+=1;
    delay(30);
  }
  delay(1000);
  analogWrite(9,0);
}