const int r_led = 10;
const int g_led = 6;
const int b_led = 3;
const int vr = A0;
void setup() {
  // put your setup code here, to run once:
  pinMode(r_led,OUTPUT);
  pinMode(g_led,OUTPUT);
  pinMode(b_led,OUTPUT);
  pinMode(vr , INPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int value = analogRead(vr);
  value = map(value,0,1023,0,100);
  Serial.println(value);
  if (value > 0 && value < 25)
  {
    digitalWrite(r_led, HIGH);
    digitalWrite(g_led, LOW);
    digitalWrite(b_led, LOW);
  }

  else if (value > 25 && value < 50)
  {
    digitalWrite(r_led, LOW);
    digitalWrite(g_led, HIGH);
    digitalWrite(b_led, LOW);
  }

  else if (value > 50 && value < 75)
  {
    digitalWrite(r_led, LOW);
    digitalWrite(g_led, LOW);
    digitalWrite(b_led, HIGH);
  }

  else 
  {
    digitalWrite(r_led, LOW);
    digitalWrite(g_led, LOW);
    digitalWrite(b_led, LOW);
  }
}