#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2); 
const int pb1 = 8;
int counter=0;

void setup() {
  lcd.init();
  lcd.clear();         
  lcd.backlight();  
  pinMode(pb1, INPUT);
  Serial.begin(9600);
}


void loop() {
  if (digitalRead(pb1)==HIGH) counter++;
  Serial.println(counter);
  lcd.clear();
  lcd.setCursor(2,0);
  lcd.print(counter);
  delay(100);
}