int r=9;
int g=10;
int b=11;
int t=1000;

void setup() {
  // put your setup code here, to run once:
pinMode(r, OUTPUT);
pinMode(g, OUTPUT);
pinMode(b, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
analogWrite(r,255);
analogWrite(g,0);
analogWrite(b,0);
delay(t);
analogWrite(r,0);
analogWrite(g,255);
analogWrite(b,0);
delay(t);
analogWrite(r,0);
analogWrite(g,0);
analogWrite(b,255);
delay(t);

}