#include <LiquidCrystal_I2C.h> //ของ wokwi
#define I2C_ADDR    0x27  //ของ wokwi
#define LCD_COLUMNS 20 //ของ wokwi
#define LCD_LINES   4 //ของ wokwi
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES); //ของ wokwi

// make some custom characters:
byte Tri[8] = {
0b10000,
0b11000,
0b11100,
0b11110,
0b11110,
0b11100,
0b11000,
0b10000
};

byte Tri2[8] = {
0b00001,
0b00011,
0b00111,
0b01111,
0b01111,
0b00111,
0b00011,
0b00001
};
byte Tri3[8] = {
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
0b00000,
0b00000
};
void setup() 
{
	// initialize LCD and set up the number of columns and rows: 
	lcd.begin(16, 2);

	// create a new character
	lcd.createChar(0, Tri);
	lcd.createChar(1, Tri2);
	lcd.createChar(2, Tri3);
	// create a new character
	
	lcd.clear();

	// Print a message to the lcd.
	lcd.print("Custom Character");
}

// Print All the custom characters
void loop() 
{ 
if(Serial.available()){
	delay(600);
	lcd.clear();
	lcd.write(Serial.read());
}
}