#include <Servo.h>
#include <LiquidCrystal.h>

LiquidCrystal lcd(0,1,2,3,4,5);
Servo servo;
int code = 50;

void setup() {
  servo.attach(10);
  lcd.begin(16,2);
}

int old = 0;
String text = "################";

void loop() {
  int sensor = analogRead(A0);
  if (sensor!=old) {
    old=sensor;
    int value = map(sensor,0,1023,0,100);
    lcd.clear();
    int len = map(sensor,0,1023,16,0);
    lcd.setCursor(0,0);
    lcd.print(value);
    lcd.print("%");
    lcd.setCursor(0,1);
    lcd.print(text.substring(len));
    if (code==value) {
      servo.write(90);
    } else {
      servo.write(0);
    }
    delay(200);
  }
}