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


#define SERVO_PIN 6
#define SERVO_LOCK_POS 20
#define SERVO_UNLOCK_POS 90
#define DIS_SDA A4
#define DIS_SCL A5

int KEY_ROWS = 4; 
int KEY_COLS = 4;
byte rowPins[4] = {A0, A1, A2, A3};
byte colPins[KEY_COLS] = {2, 3, 4, 5};

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


LiquidCrystal_I2C lcd(0x27, 16, 2);


void setup() {
  // put your setup code here, to run once:
  lcd.init(); 
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("test");

}

void loop() {
  // put your main code here, to run repeatedly:

}