I2C-LCD-Demo

arduino demo with i2c lcd 16x2 Display

connection

LCD Board: Uno Board:

SDA- A4/SDA

SCL- A5/SCL

GND GND

VCC 5v

try by comment and uncomment below line as per i2c address of lcd in code

LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display

or

LiquidCrystal_I2C lcd(0x3F,16,2); // set the LCD address to 0x3F for a 16 chars and 2 line display

some basic function of LCD library

lcd.init(); //for lcd intialization

lcd.backlight(); // for lcd backlight

lcd.setCursor(row,col); // setting row(max 2) and col(max 16) for text

lcd.print("Text"); // for printing text in lcd

lcd.clear(); // for clean text of lcd