const int Switch = 4;
const int relay = 13;
const int Sensor = 7;
int buttonstate=0;
int lastbuttonstate=0;
int buttonPushCounter=0;
int SensorValue;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(Switch, INPUT);
  pinMode(Sensor, INPUT);
  pinMode(relay, OUTPUT);
}
void loop(){
  
    /////////////////////////////button///////////////////////////////
 buttonstate = digitalRead(Switch);
  if(buttonstate != lastbuttonstate){
    if(buttonstate == HIGH){
      buttonPushCounter += 1;
    }
    delay(5);
  }
  lastbuttonstate = buttonstate;
  /////////////////////////////Sensor///////////////////////////////
  SensorValue = digitalRead(Sensor);
  if(buttonPushCounter && SensorValue == 1){
    digitalWrite(relay,HIGH);
    HAVE();
  }
  if(buttonPushCounter && SensorValue == 0){
    digitalWrite(relay,LOW);
    NON();
  }

}
void HAVE(){
  lcd.init();
  lcd.backlight();
  lcd.setCursor(2, 2);
  lcd.print("intruder");
}
void NON(){
  lcd.init();
  lcd.backlight();
  lcd.setCursor(2, 2);
  lcd.print("secured");
}