int R = 7;
int G = 6;
int B = 8;

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:
  int value = analogRead(A0);

  digitalWrite(R, HIGH);
  delay(value);
  digitalWrite(R, LOW);
  delay(value);

  digitalWrite(G, HIGH);
  delay(value);
  digitalWrite(G, LOW);
  delay(value);

  digitalWrite(B, HIGH);
  delay(value);
  digitalWrite(B, LOW);
  delay(value);

  Serial.println(value);
}