#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
int blinks = 0;
void setup() {
  // put your setup code here, to run once:
  pinMode(8, OUTPUT);
  pinMode(7, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.print(blinks);
  lcd.clear();
}

void loop() {
  // put your main code here, to run repeatedly:
  if (blinks >= 10)
  {
    digitalWrite(8, HIGH);
    delay(10);
    digitalWrite(8, LOW);
    blinks = blinks - 1;
  }
  else if (blinks < 10)
  {
    digitalWrite(7, HIGH);
    delay(10);
    digitalWrite(7, LOW);
    blinks = blinks + random(1, 5);
  }
  lcd.print(blinks);
  delay(2000);
  lcd.clear();

}