To display “anything” on an LCD screen connected to an Arduino Uno using an I2C (Inter-Integrated Circuit) converter

code:

#include <Wire.h> // Include the Wire library for I2C communication osief.com
#include <LiquidCrystal_I2C.h> // Include the LiquidCrystal_I2C library osief.com

// Set the LCD address (usually 0x27 or 0x3F)
LiquidCrystal_I2C lcd(0x27, 16, 2); // Change the address if necessary

void setup() {
lcd.init(); // Initialize the LCD
lcd.backlight(); // Turn on the backlight
lcd.setCursor(0, 0); // Set cursor to the first row
lcd.print(“Hello”); // Print “Hello” on the first row
lcd.setCursor(0, 1); // Set cursor to the second row
lcd.print(“Arduino Uno!”); // Print “Arduino Uno!” on the second row
}

void loop() {
// Your loop code here (if needed)
}

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Install the Required Libraries

To communicate with the I2C LCD, you’ll need to install the “LiquidCrystal_I2C” library. Here’s how to install it:

1. Open the Arduino IDE.
2. Go to “Sketch” > “Include Library” > “Manage Libraries…”
3. In the Library Manager, type “LiquidCrystal_I2C” into the search bar.
4. Click “Install” for the “LiquidCrystal I2C” library by Frank de Brabander.

 Connect the Hardware

Connect your Arduino Uno and the I2C LCD module as follows:

• Arduino Uno 5V → I2C LCD VCC
• Arduino Uno GND → I2C LCD GND
• Arduino Uno A4 (SDA) → I2C LCD SDA
• Arduino Uno A5 (SCL) → I2C LCD SCL

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