#include <LiquidCrystal_I2C.h>
#include <LiquidCrystal.h>
#include <Keypad.h>
#include <Servo.h>

//LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
LiquidCrystal_I2C lcd(0x27, 16, 2);
//#define I2C_ADDR    0x27
//#define LCD_COLUMNS 20
//#define LCD_LINES   4

//LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {9, 8, 7, 6};
byte colPins[KEYPAD_COLS] = {5, 4, 3, 2};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'R'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

uint64_t value = 0;

void showSpalshScreen() {
  lcd.setCursor(5, 0);
  lcd.print("Hello");
  lcd.setCursor(3, 1);
  String message = "Electronic";
  for (byte i = 0; i < message.length(); i++) {
    lcd.print(message[i]);
    delay(50);
  }
  delay(1500);
}

void updateCursor() {
  if (millis() / 250 % 2 == 0 ) {
    lcd.cursor();
  } else {
    lcd.noCursor();
  }
}
void setup() {
   Serial.begin(115200);
  lcd.begin(16, 2);
  lcd.backlight();
  pinMode(22,OUTPUT);
  pinMode(23,OUTPUT);
  pinMode(6,OUTPUT);

  showSpalshScreen();
  lcd.clear();
  lcd.cursor();
  lcd.setCursor(5, 0);
  lcd.print("Search");
  lcd.setCursor(0, 1);
  lcd.print("*");
}
String Pasword1 = "R10*" ;
String Pasword2 = "R100*" ;
String Pasword3 = "C00000001*" ;
String txt1 = "" ;

char operation = 0;
String memory = "";
String current = "";
uint64_t currentDecimal;
bool decimalPoint = false;

double calculate(char operation, double left, double right) {
  switch (operation) {
    case '+': return left + right;
    case '-': return left - right;
    case '*': return left * right;
    case '/': return left / right;
  }
}
void processInput(char key) {
  if ('-' == key && current == "") {
    current = "-";
    lcd.print("-");
    return;
  }
  if ('.' == key && current.indexOf('.') >= 0) {
    return;
  }
  if ('.' != key && current == "0") {
    current = String(key);
  } else if (key) {
    current += String(key);
  }
  lcd.print(key);
}
void loop() {
  updateCursor();
  char key = keypad.getKey();
  if (key != NO_KEY) {
    txt1 += key;
    Serial.println(txt1);
    if(key == '*'){
      if( txt1==Pasword1){
        Serial.println("know");
        digitalWrite(22, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(22, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);        
      } 
      if( txt1==Pasword2){
        Serial.println("know");
        txt1 ="";
        digitalWrite(23, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(23, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      if( txt1==Pasword3){
        Serial.println("know");
        txt1 ="";
        digitalWrite(14, HIGH);
        lcd.setCursor(0, 1);
        lcd.print("Yes I know");
        delay(5000);
        digitalWrite(14, LOW);
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
      } 
      else  {
        txt1 ="";
        lcd.clear();
        lcd.setCursor(5, 0);
        lcd.print("Search");
        lcd.setCursor(0, 1);
  }
    }
    processInput(key);
  }
}