#define R1 1
#define G1 2
#define B1 3
#define R2 4
#define G2 5
#define B2 6
#define R3 7
#define G3 8
#define B3 17

int r[9] = {R1,G1,B1,R2,G2,B2,R3,G3,B3};

void pattern0(){

for (int m=0; m<=8; m++){
  analogWrite(r[m], 255); // turn the LED on
  delay(100); // wait for a second

}
for (int m=8; m>=0; m--){
  analogWrite(r[m], 0); // turn the LED on (HIGH is the voltage level)
  delay(100); // wait for a second

}


}

void setup() {

for(int i=0; i<=8; i++){
  pinMode(r[i], OUTPUT);
}

}

void loop() {

pattern0();


}