#include<LiquidCrystal.h>
const int rs = 23, en = 22, d4 = 21, d5 = 19, d6 = 18, d7 = 5;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
int potpin = 21;
int val;



void setup()
{
  lcd.begin(16,2);
}
void loop()
{
  val = analogRead(4);
  lcd.setCursor(0,0);
  lcd.print(val);
}