// SCL = 5
 // SDA = 4
 //LCD___ https://www.youtube.com/watch?v=2PGaeHy3JpU&list=PLJvXwFcRss9yw8H828BxhPgoaWtlE2TLe&index=12
// Pushbutton     https://www.youtube.com/watch?v=2PGaeHy3JpU&list=PLJvXwFcRss9yw8H828BxhPgoaWtlE2TLe&index=12
 #include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16, 2); 
const int buttonPin = 2;
const int ledPin = 13;  
int ledState = LOW;       
int buttonState;          
int lastButtonState = HIGH;  
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;  
//=========================================
void setup() { 
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, ledState);
//=====================================
  lcd.init();
  lcd.backlight();
  lcd.setCursor(1,0);
  lcd.print("OUTPUT STATUS");
}

void loop() {
  int reading = digitalRead(buttonPin);
  if (reading != lastButtonState) {
    lastDebounceTime = millis();
  }
  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading != buttonState) {
      buttonState = reading;
      if (buttonState == LOW) {
        ledState = !ledState;
      }
    }
  }
  digitalWrite(ledPin, ledState);
  lastButtonState = reading;

   lcd.setCursor(5,1);
   if(digitalRead(13)==HIGH)
  lcd.print("ON");
  else
  lcd.print("OFF");
}