#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
  pinMode(A0, INPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  Serial.begin(9600);
  lcd.init();
  lcd.begin(16,2);
  lcd.backlight();
  lcd.setCursor(0, 0);
}

void loop() {
  int APin = A0;
  int sensor = map(analogRead(A0),0,1023,0,255);
  Serial.println(sensor);
  if (sensor < 500){
    lcd.setCursor(1,0);
    digitalWrite(8, LOW);
    digitalWrite(9, HIGH);
    lcd.print("BBBBBBBBBBBBBB");
    delay(500);
    lcd.setCursor(1,1);
    lcd.print(sensor);
    delay(500);
    lcd.clear();
  }
  else {
    lcd.setCursor(1,0);
    digitalWrite(9, LOW);
    digitalWrite(8, HIGH);
    lcd.print("YYYYYYYYYYYYYY");
    delay(500);
    lcd.setCursor(1,1);
    lcd.print(sensor);
    delay(500);
    lcd.clear();
  }
}