#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
  pinMode(3, OUTPUT);
  pinMode(A0, INPUT);

  lcd.begin(16,2);
  lcd.print("Hello World!");

  Serial.begin(9600);
  Serial.println("Hello World!");
  lcd.setCursor(0,1);
  delay(3000);
}

void loop() {
  // put your main code here, to run repeatedly:
  analogWrite(3, map(analogRead(A0), 0, 1024, 0, 256));
  lcd.setCursor(0,1);
  lcd.print(map(analogRead(A0), 0, 1024, 0, 256));
  // Serial.println(map(analogRead(A0), 0, 1024, 0, 256));

}