#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
#define LED 3
int y;
     void setup() {
  
  lcd.init();
  lcd.backlight();
  pinMode(LED, OUTPUT);

}

void loop() {
  
  int val=analogRead(A0);
  lcd.setCursor(2,0);
  lcd.print(val);
  delay(200);
  lcd.clear();
  y = map(val, 0, 1023, 0, 255);
  analogWrite(LED,y);
  
}