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

const int ROW_NUM    = 4; 
const int COLUMN_NUM = 4; 

char keys[ROW_NUM][COLUMN_NUM] = {
  {'1','2','3', 'A'},
  {'4','5','6', 'B'},
  {'7','8','9', 'C'},
  {'*','0','#', 'D'}
};

byte pin_rows[ROW_NUM] = {9, 8, 7, 6};      
byte pin_column[COLUMN_NUM] = {5, 4, 3, 2}; 

Keypad keypad = Keypad(makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM );
LiquidCrystal_I2C lcd(0x27, 16, 2); 
Servo servo;

int cursorColumn = 0;

void setup(){
  lcd.init(); 
  lcd.backlight();
  servo.attach(10);

}

void loop(){
  char key = keypad.getKey();

   switch (key) {
    case '1':
      lcd.setCursor(0, 0);
      lcd.print("Case = 1");
      lcd.setCursor(0, 1);
      lcd.print("servo= 30c");
      servo.write(30); 
      break;

    case '2':
      lcd.setCursor(0, 0);
    lcd.print("Case = 2");
      lcd.setCursor(0, 1);
      lcd.print("servo= 60c");
      servo.write(60); 
      break;

      case '3':
      lcd.setCursor(0, 0);
      lcd.print("Case = 3");
      lcd.setCursor(0, 1);
      lcd.print("servo= 90c");
      servo.write(90); 
      break;

      case '4':
      lcd.setCursor(0, 0);
      lcd.print("Case = 4");
      lcd.setCursor(0, 1);
      lcd.print("servo= 120c");
      servo.write(120); 
      break;

      case '5':
      lcd.setCursor(0, 0);
      lcd.print("Case = 5");
      lcd.setCursor(0, 1);
      lcd.print("servo= 150c");
      servo.write(150); 
      break;

      case '6':
      lcd.setCursor(0, 0);
      lcd.print("Case = 6");
      lcd.setCursor(0, 1);
      lcd.print("servo= 180c");
      servo.write(180); 
      break;

      case '0':
      lcd.setCursor(0, 0);
      lcd.print("Case = 0");
      lcd.setCursor(0, 1);
      lcd.print("servo= 0c");
      servo.write(0); 
      break;

      default:
      break;
  }
}