#include <LiquidCrystal.h>
#include <Keypad.h>
#include <Servo.h>
#define ROW_NUM    4  // four rows
#define COLUMN_NUM 4  // four columns
#define SERVO_PIN  A10

Servo myservo; 

const int rs=12, e=11, d4=5, d5=4, d6=3, d7=2;

LiquidCrystal lcd(rs, e, d4, d5, d6, d7);


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}; //connect to the row pinouts of the keypad
byte pin_column[COLUMN_NUM] = {5, 4, 3, 2}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM );

// int pos = 0; 
void setup() {
   myservo.attach(10); 
   lcd.begin(16,2);
   lcd.print("Hello");
  }

void loop() {
       char key=keypad.getKey();
       if(key=='4'){
        for (int angle = 0; angle <= 180; angle++) { // Rotate from 0 to 180 degrees
      myservo.write(angle); // Set servo angle
      delay(5); // Delay for smooth rotation, adjust as necessary
    }
      } 
      else if(key=='5'){
        for (int angle = 180; angle >= 0; angle--) { // Rotate from 180 to 0 degrees
      myservo.write(angle); // Set servo angle
      delay(5); // Delay for smooth rotation, adjust as necessary
    }

      }      
  }