RG2004 20×4 LCD Display (Blue Backlight) – 5V Parallel Interface for Arduino

Description

The RG2004 20×4 Blue LCD Display Module is a character-type display with 20 columns and 4 rows, offering a clear white text on blue backlight. It uses the standard HD44780 controller, making it highly compatible with a wide range of microcontrollers and open-source libraries.

The module supports parallel 16-pin communication, commonly interfaced using 4-bit or 8-bit mode with platforms like Arduino, ESP8266, and Raspberry Pi. Perfect for projects requiring data output like sensor values, user menus, clocks, or debug displays.

Features:

20×4 character LCD screen

Blue backlight with high contrast white text

HD44780 compatible controller IC

4-bit or 8-bit parallel communication

5V logic-compatible (TTL)

Backlight and contrast adjustable via external resistor/potentiometer

Breadboard/PCB friendly with 16-pin header

Specifications:

Model: RG2004

Display Type: Character LCD

Resolution: 20 characters x 4 lines

Backlight: Blue with white text

Controller IC: HD44780

Interface: 16-pin Parallel

Operating Voltage: 5V

Current: ~1mA (without backlight)

Dimensions: Approx. 98mm × 60mm × 14mm

Mounting Holes: 4

Package Includes:

1 x 20×4 LCD Display Module (Blue Backlight)