dfg

byte red_light_pin= 9;
byte green_light_pin = 10;
byte blue_light_pin = 11;
int delay_time = 50;

void setup() {
 //Serial.begin(9600);
 for(byte pin = 2; pin <= 8; pin++){
  pinMode(pin, OUTPUT);
 }
  pinMode(A7, OUTPUT);
  
  randomSeed(analogRead(0));

  for(int i = 2; i <= 8; i++){
    digitalWrite(i, HIGH);
  }
}

void loop() {
  static byte counter = 0;
  
 /*if(counter == 0)
    RGB_color(0, 255, 255);
  if(counter == 1)
    RGB_randomColor();*/
   
  for(byte i = 2; i <= 8; i++){
    RGB_randomColor();
    digitalWrite(i, LOW);
    delay(delay_time);
    digitalWrite(i, HIGH);
  }
  
  for(int i = 8; i >= 2; i--){
    RGB_randomColor();
    digitalWrite(i, LOW);
    delay(delay_time);
    digitalWrite(i, HIGH);
  }
  /*Serial.print(counter);
  counter++;
  if(counter == 2)
    counter = 0;*/
  
}

void RGB_color(int red_light_value, int green_light_value, int blue_light_value){
  analogWrite(red_light_pin, red_light_value);
  analogWrite(green_light_pin, green_light_value);
  analogWrite(blue_light_pin, blue_light_value);
}

void RGB_randomColor()
{
  analogWrite(red_light_pin, random(0, 255));
  analogWrite(green_light_pin, random(0, 255));
  analogWrite(blue_light_pin, random(0, 255));
}