A Beginners Guide

LCD 2004 I2C With Arduino

A Beginner's Guide

Introduction

In this tutorial, we will learn how to use the LCD 2004 I2C with Arduino. The LCD 2004 I2C is a character-based LCD (Liquid Crystal Display) that uses the I2C (Inter-Integrated Circuit) protocol to communicate with the Arduino. The I2C protocol allows the LCD to be controlled with only two wires, making it a great choice for projects where space is limited.

Hardware Required

1. Arduino Uno or compatible board
2. LCD 2004 I2C
3. 4 x M/F Jumper Wires

Wiring

Connect the LCD 2004 I2C to the Arduino as follows:

• LCD VCC to Arduino 5V
• LCD GND to Arduino GND
• LCD SCL to Arduino A5 (SCL)
• LCD SDA to Arduino A4 (SDA)

Library Installation

To use the LCD 2004 I2C with Arduino, you need to install the LiquidCrystal_I2C library. You can install the library using the Arduino Library Manager. Open the Arduino IDE, go to Sketch > Include Library > Manage Libraries and search for "LiquidCrystal_I2C".

Example Code

The following is an example code that will display "Hello World!" on the LCD 2004 I2C:

```cpp #include LiquidCrystal_I2C lcd(0x27, 16, 2); // Set the I2C address and dimensions of the LCD void setup() { lcd.begin(); // Initialize the LCD lcd.setCursor(0, 0); // Set the cursor position to the beginning of the first line lcd.print("Hello World!"); // Display "Hello World!" on the LCD } void loop() {} ```

Conclusion

In this tutorial, we learned how to connect and use the LCD 2004 I2C with Arduino. We also covered how to install the necessary library and provided an example code to display "Hello World!" on the LCD. With this knowledge, you can now start creating your own projects using the LCD 2004 I2C.