#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

byte customChar[] = { //ใ
  B01100,
  B11010,
  B10110,
  B01010,
  B00010,
  B00010,
  B00011,
  B00011
};
byte customChar2[] = { //ช้
  B00000,
  B01010,
  B01100,
  B00001,
  B11010,
  B11100,
  B01010,
  B01110
};
byte customChar3[] = {
  B00000,
  B00100,
  B00110,
  B11111,
  B11111,
  B00110,
  B00100,
  B00000
};

byte customChar4[] = {
  B00001,
  B11110,
  B00010,
  B01110,
  B11010,
  B11010,
  B01110,
  B00110
};
byte customChar5[] = {
  B00000,
  B00110,
  B00110,
  B10010,
  B01010,
  B00110,
  B00000,
  B00000
};

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int a1 = 0;

void setup() {
  lcd.init();
  lcd.backlight(); // เริ่มต้นการทำงาน lcd
  lcd.createChar(0, customChar);
  lcd.createChar(1, customChar2);
  lcd.createChar(2, customChar3);
  lcd.createChar(4, customChar4);
  lcd.createChar(5, customChar5);

}

void loop() {
  //  lcd.setCursor(0,0);
  //  lcd.print("set-water[auto]");
   lcd.setCursor(2,0);
   //lcd.home();
   lcd.write((byte)0);
   lcd.setCursor(3,0);
   //lcd.home();
   lcd.write((byte)1);
  //  lcd.setCursor(8,0);
  //  lcd.print("max water");


   lcd.setCursor(0,1);
   lcd.print("[");
   lcd.setCursor(5,1);
   lcd.print("]");
   lcd.setCursor(1,1);
   lcd.print(a1);
   delay(500);
   lcd.setCursor(6,1);
   //lcd.home();
   lcd.write((byte)2);
   lcd.setCursor(7,1);
   lcd.print("[3000]");

   lcd.setCursor(6,0);
   //lcd.home();
   lcd.write((byte)4);
   lcd.setCursor(7,0);
   lcd.write((byte)5);


   a1++;


}