#define  potpin  A0
#define  LED_Y  3
#define  LED_G  5
#define  LED_R  6
int n , i;

void setup() {
Serial.begin(9600);
pinMode(9, OUTPUT);
pinMode(6, OUTPUT);
pinMode(3, OUTPUT);

}




void loop() {

n = analogRead(A0);

Serial.print(n);
Serial.println(" ");

if (n>=0 & n<=50 ){

  digitalWrite(LED_Y, LOW);
  digitalWrite(LED_G, LOW);
  digitalWrite(LED_R, LOW);


}

if (n>=55 & n<=400 ){

   digitalWrite(LED_Y, HIGH);
   digitalWrite(LED_G, LOW);
   digitalWrite(LED_R, LOW);


}


if (n>=500 & n<=900){
       digitalWrite(LED_G, HIGH);
       digitalWrite(LED_R, LOW);
      
       eledY();


}



if (n>=900 & n<=1023){

   digitalWrite(LED_R, HIGH);
   eledG();
   eledY();



}


   }







void eledY() {
    
       digitalWrite(LED_Y, LOW);
       delay(200);
       digitalWrite(LED_Y,HIGH);
       delay(100);


}


void eledG() {

      digitalWrite(LED_G, LOW);
      delay(300);
      digitalWrite(LED_G,HIGH);
      delay(150);
}