#include <Keypad.h>
#include <LiquidCrystal.h>
int i=0;
LiquidCrystal lcd (7,8,9,10,11,12);

const byte KEYPAD_ROWS = 4; //กำหนด แถวของ keypad ที่ใช้
const byte KEYPAD_COLS = 4; //กำหนด คอลัมของ keypad ที่ใข้
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2}; //กำหนดพอร์ตที่ต่อ 
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0}; //กำหนดพอร์ตที่ต่อ 
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

void setup() {
  pinMode(6, OUTPUT);
  pinMode(13,OUTPUT);
  lcd.begin(20,4);
  lcd.setCursor(2,0);
  lcd.print("Yanisa 632021120");
  lcd.setCursor(4,1);
  lcd.print("Mode : Manual");
}

void loop() {
  
  char key = keypad.getKey();
  if(key =='2'){digitalWrite(6, HIGH); noTone(13); lcd.setCursor(7,2); lcd.print("LED ON");}
  if(key =='9'){digitalWrite(6, LOW); tone(13, 1000); delay(100); noTone(13); lcd.setCursor(7,2); lcd.print("LED OFF");}
  if(key =='A'){digitalWrite(6, HIGH); noTone(13); lcd.setCursor(7,2); lcd.print("LED ON ");
  
  for(int i = 10;  i--;) {
  lcd.setCursor(4,1);
  lcd.print("Mode : Auto   ");
  lcd.setCursor(10,3);
  lcd.print(i,DEC);delay(600);
  tone(13, 1000);delay(100);noTone(13);
  }

  if(i == 0)
  {digitalWrite(6, LOW); tone(13, 1000); delay(1500); noTone(13);}
  } 
}