#define merah 2
#define kuning 3
#define hijau 4
void setup() {
  // put your setup code here, to run once:
 pinMode(merah, OUTPUT);
 pinMode(kuning, OUTPUT);
 pinMode(hijau, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  for(int i=1; i<=255; i++)
  {
    int u=255 -i;
    analogWrite(merah, i);
    analogWrite(kuning, u);
    delay(10);
    if(i == 255)
    {
      for(int u = 0; u<=255; u++)
      {
        int i=255 - u;
        analogWrite(merah, i);
        analogWrite(kuning, u);
        delay(10);
      }
    }
  }


}