#include <Keypad.h>
#include <LiquidCrystal_I2C.h>
byte rowpins[4]={13,12,11,10};
byte columnpins[4]={9,8,7,6};
char key[4][4]={
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'},
};
LiquidCrystal_I2C lcd(0x27,16,2);
Keypad keys=Keypad(makeKeymap(key),rowpins,columnpins,4,4);

void setup() {
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Lets start");
  lcd.setCursor(0,1);
  lcd.print("press any key");
  delay(500);
  Serial.begin(9600);
}
void loop() {
  char value= keys.getKey();
  if(value){
    Serial.println(value);
  }
  if(value=='1' || value=='2' || value=='3' || value=='A'){
    digitalWrite(2, HIGH);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("LED 1 iS ON");
    lcd.setCursor(0,1);
    lcd.print("FOR 1,4,3,D"); 
  }
  else if(value=='4' || value=='5' || value=='6' || value=='B'){
    digitalWrite(2, LOW);
    digitalWrite(3, HIGH);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("LED 2 iS ON");
    lcd.setCursor(0,1);
    lcd.print("FOR 1,4,7,B");
  }
  else if(value=='7' || value=='8' || value=='9' || value=='C'){
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("LED 3 iS ON");
    lcd.setCursor(0,1);
    lcd.print("FOR 1,7,7,C");

  }
  else if(value=='*' || value=='0' || value=='#' || value=='D'){
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("LED 4 iS ON");
    lcd.setCursor(0,1);
    lcd.print("FOR *,4,#,D");
  }
}