LCD 2004A IIC with Blue Backlight, 5V

Description

The LCD 2004A IIC is a 20-character by 4-line liquid crystal display (LCD) designed for displaying information in various electronic projects. With an integrated I2C (IIC) module, the display connects easily to microcontrollers such as Arduino, Raspberry Pi, and others. Thanks to its blue LED backlight, the screen remains clearly visible even in low-light environments.

Technical Specifications

• Model: LCD 2004A with I2C module
• Characters: 20 characters x 4 lines
• Interface: I2C (IIC) with built-in controller (PCF8574)
• Operating Voltage: 5V DC
• Backlight: Blue with white characters
• Adjustable Contrast: Via potentiometer on the I2C module
• Data Pins: SDA and SCL
• Typical I2C Address: 0x27 (can be 0x3F depending on module version)
• Dimensions: Approx. 98 x 60 x 12 mm

Advantages

• Reduced wiring thanks to I2C interface (only 2 signal wires)
• Compatible with popular microcontroller platforms
• Clear and bright display
• Ideal for displaying menus, sensor readings, or diagnostics

Typical Usage Example (Arduino)

```cpp

include <Wire.h>

include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4); // Address, columns, rows

void setup() { lcd.init(); // Initialize the LCD lcd.backlight(); // Turn on the backlight lcd.setCursor(0, 0); // Set cursor position lcd.print("Hello!"); // Display text }

void loop() { // Additional code here } ```

Notes

• When using the display with Arduino, it is recommended to use the LiquidCrystal_I2C library.
• If text does not appear correctly – check the I2C address and wiring.