int value;
int LED_number;

    void setup() 
    {
      Serial.begin(115200);

    }

    void loop() 
    {

      value = analogRead(A0);
      Serial.print(value);
      Serial.print("  ");
      LED_number = map(value,0,1023,1,8);
      Serial.println(LED_number);

      Turn_ON_LED(LED_number);
    }




    void Turn_ON_LED(int LED_NUM)
    { 
      PORTD =B00000000; // turn off all leds in portd from 2-7 pins(actually 0-7)
      PORTB =B00000000; // turn off all leds in portb from 8-9 pins (actually 8-13)
      //Serial.println(LED_NUM);

        if(LED_NUM==1)
      {
       //Serial.println("Turn ON LED 1");
       PORTB =B00000010; //turn on led 1 in pin 2

      }

        if(LED_NUM==2)
      {
       //Serial.println("Turn ON LED 2");
       PORTB =B00000001; //turn on led 2 in pin 3
       
      }

        if(LED_NUM==3)
      {
       //Serial.println("Turn ON LED 3");
       PORTD =B10000000; //turn on led 3 in pin 4

      }

        if(LED_NUM==4)
      {
       //Serial.println("Turn ON LED 4");
       PORTD =B01000000;

      }

        if(LED_NUM==5)
      {
       //Serial.println("Turn ON LED 5");
       PORTD =B00100000;

      }

      if(LED_NUM==6)
      {
       //Serial.println("Turn ON LED 6");
       PORTD =B00010000;

      }

        if(LED_NUM==7)
      {
       //Serial.println("Turn ON LED 7");
       PORTD =B00001000;
      }

        if(LED_NUM==8)
      {
       //Serial.println("Turn ON LED 8");
       PORTD =B00000100;

      }


    }