• LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Extracted Image 5
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Image 1
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Image 2
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Image 3
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Image 4
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Image 5
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Extracted Image 1
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Extracted Image 2
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Extracted Image 3
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Extracted Image 4
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Extracted Image 6
  • LCD2004 2004 LCD Module Blue/Green/White Screen 20X4 Character LCD Display IIC I2C Serial Interface Adapter Module for Arduino - Extracted Image 8
1 12

LCD Display 2004 Module Character 20x4 Blue/White Blacklight

LCD Display 2004 Module Character 20x4 Blue/White Blacklight

LCD Display 2004 Module Character 20x4 Blue/White Blacklight

LCD2004 20x4 Character LCD Display Module for Arduino and Raspberry Pi with I2C Interface

This LCD2004 20x4 character LCD module combines a blue or green backlit LCD display with an I2C serial interface backpack, making it easy to connect to Arduino and Raspberry Pi projects using only four wires. Built around an HD44780-compatible controller, it provides a reliable and widely supported solution for showing text, numbers, sensor readings, and status information in embedded systems.

Key Features

  • 20x4 Display Format: Shows 4 lines of 20 characters each for a total of 80 characters.
  • I2C Serial Interface: Uses a PCF8574-based backpack to reduce wiring and save GPIO pins.
  • HD44780-Compatible Controller: Works with standard LCD libraries and common microcontroller platforms.
  • 5V Operation: Designed for stable use with 5V DC power.
  • Adjustable Contrast: Built-in potentiometer for contrast and backlight adjustment.
  • Arduino and Raspberry Pi Compatible: Easy to wire and suitable for hobby and prototype projects.

Technical Details

Specification Details
Product Type LCD2004 character LCD display module
Display Size 20 columns x 4 rows
Backlight Colour Blue or green
Interface I2C / IIC serial interface
Controller HD44780-compatible
Working Voltage 5V only
Default I2C Address 0x27 for PCF8574T, 0x3F for PCF8574AT
Wiring GND to GND, VCC to VCC, SDA to A4, SCL to A5
Included Feature Potentiometer for contrast adjustment

Typical Applications

Ideal for displaying real-time clock data, temperature, humidity, menu text, sensor readings, device status, and other alphanumeric information. This 20x4 LCD display module is commonly used in Arduino projects, Raspberry Pi builds, automation systems, and general electronics prototypes where a clear character display is needed.

Notes

Before use, check the I2C backpack chip to confirm the address and install the appropriate LCD library for your board. The module operates at 5V only, and the potentiometer should be adjusted to achieve the best contrast and backlight visibility.

Package Includes

1 x LCD2004 20x4 LCD display module with I2C serial interface backpack.

View full details