#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
int count = 0;
void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
  lcd.clear();
  pinMode(5, OUTPUT);
  pinMode(17, OUTPUT);
  pinMode(16, OUTPUT);
  pinMode(4, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.setCursor(0, 0);
  lcd.print("Hello");

  

  int btn = digitalRead(4);
  if(btn == HIGH){
    count++;
    while(digitalRead(4) == HIGH){
      delay(50);
    }
  }

  if(count == 1){
    digitalWrite(16, 1);
    digitalWrite(17, 1);
    digitalWrite(5, 1);
  }else{
    count = 0;
    digitalWrite(16, 0);
    digitalWrite(17, 0);
    digitalWrite(5, 0);
  }
}