#include <Keypad.h> 
#include <LiquidCrystal.h> 
 
 
LiquidCrystal lcd(0,1,2,3,4,5);
 
 
const byte ROWS = 4;  
const byte COLS = 4;  
int r=6;
int g=7;
int b=8;
 
 
char keys[ROWS][COLS] = { 
  {'1', '2', '3', 'A'}, 
  {'4', '5', '6', 'B'}, 
  {'7', '8', '9', 'C'}, 
  {'*', '0', '#', 'D'} 
}; 
 
 
byte rowPins[ROWS] = {26,21,20,19};  
 
byte colPins[COLS] = {18,17,16,15};  
 
 
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS); 
 
void setup()
 { 
  lcd.begin(16, 2);  
  lcd.print("Press a Key:");



  pinMode(r, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(b, OUTPUT);
}
  void loop()
 { 
  char key = keypad.getKey();
 if (key) {  
    lcd.clear();  
    lcd.print("Key Pressed: "); 
    lcd.setCursor(0, 1);  
    if(key==1){
      digitalWrite(6,HIGH);
      lcd.print(" one ");
    }
    } 
    delay(500);  
}