#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <Keypad.h>

LiquidCrystal_I2C lcd = LiquidCrystal_I2C (0x27,16,2);

const byte numRows = 4;
const byte numCols = 4;
char keymap [numRows][numCols] =
  {
    {'1', '2', '3','A'},
    {'4', '5', '6','B'},
    {'7', '8', '9','C'},
    {'*', '0', '#','D'},
  };

byte rowPins[numRows] = {12,11,10,9};
byte colPins[numCols] = {8,7,6,5};

Keypad myKeypad = Keypad (makeKeymap (keymap), rowPins, colPins, numRows, numCols);

int redLED = 2;
int dt = 500;
String msg1 = ("HOW MANY BLINKS? ");

void setup() {
   pinMode (redLED,OUTPUT);
  Serial.begin(9600);
  lcd.begin(16,2);
 lcd.print (msg1);
 lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  char keypressed = myKeypad.getKey();
Serial.read ();
  

if (keypressed != NO_KEY){
 if(keypressed == '1'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);

 }
}
 if (keypressed != NO_KEY){
 if(keypressed == '2'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
 }
}

if (keypressed != NO_KEY){
 if(keypressed == '3'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
 }
}

if (keypressed != NO_KEY){
 if(keypressed == '4'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
 }
}

if (keypressed != NO_KEY){
 if(keypressed == '5'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
 }
}

if (keypressed != NO_KEY){
 if(keypressed == '6'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
 }
}
if (keypressed != NO_KEY){
 if(keypressed == '7'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
 }
}
if (keypressed != NO_KEY){
 if(keypressed == '8'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);

 }
}
if (keypressed != NO_KEY){
 if(keypressed == '9'){
   lcd.setCursor (0,1);
  lcd.print (keypressed);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
  digitalWrite (redLED, HIGH);
  delay (dt);
  digitalWrite (redLED, LOW);
  delay (dt);
 }
}


}