#include <Keypad.h>

const byte numRows= 4;          //number   of rows on the keypad
const byte numCols= 4;          //number of columns on   the keypad

char keymap[numRows][numCols]= 
{
{'1', '2', '3', 'A'},   
{'4', '5', '6', 'B'}, 
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte   rowPins[numRows] = {15,16,17,18}; //Rows 0 to 3 //if you modify your pins you should   modify this too
byte colPins[numCols]= {19,21,22,23};
Keypad myKeypad=Keypad(makeKeymap(keymap), rowPins, colPins, numRows, numCols);
void setup() {
  Serial.begin(115200);
  Serial.print("Keypad Code");
}

void loop() {
char keypressed = myKeypad.getKey();  
if(keypressed){
 
 if(keypressed=='#')
 {
Serial.println("\n TripleMI2");
 }
 else
 {
   Serial.print(keypressed);
 }
}

}