LCD1604 16x4 Character LCD Display Module with I2C Interface

LCD1604 16x4 Character LCD Display Module with I2C Serial Interface

Upgrade your electronics projects with this high-quality LCD1604 16x4 Character LCD Display Module. Featuring a built-in IIC/I2C serial interface adapter, this module dramatically simplifies wiring — requiring only 4 pins instead of the usual 8+, making it ideal for Arduino, Raspberry Pi, and other microcontroller platforms. Available in both Blue and Yellow-Green backlight options to suit your project's aesthetic.

Made in Mainland China.

Key Features

• 16 columns × 4 rows character display — great for showing more data than a standard 16x2 module
• I2C / IIC serial interface — reduces GPIO pin usage to just 4 (VCC, GND, SDA, SCL)
• Blue or Yellow-Green backlit screen — clearly readable in various lighting conditions
• PCB construction — durable, high-quality board material
• Compatible with Arduino, Raspberry Pi, STM32, and most common microcontrollers
• Ideal for industrial automation, DIY electronics, sensor readouts, menu systems, and prototyping
• Easy to integrate with standard LCD libraries (LiquidCrystal_I2C)

Specifications

• Display Format: 16 characters × 4 lines
• Interface: IIC / I2C Serial
• Backlight Color Options: Blue / Yellow-Green
• Material: PCB
• High-Concern Chemicals: None
• Battery: Not included
• Typical Application: Industrial Automation, DIY Electronics, Prototyping

Package Contents

• 1 × LCD1604 16x4 Character LCD Display Module with I2C Interface Adapter

Important Notes

• Please allow ±5–10mm differences due to manual measurement.
• Actual color may vary slightly from images due to monitor settings and lighting conditions.

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Frequently Asked Questions

Q: What microcontrollers is the LCD1604 I2C module compatible with?

A: This LCD1604 I2C display module is compatible with a wide range of microcontrollers, including Arduino (Uno, Mega, Nano), Raspberry Pi, STM32, and most platforms that support the I2C (IIC) serial communication protocol. Simply connect VCC, GND, SDA, and SCL to get started.

Q: What is the difference between the Blue and Yellow-Green backlight versions?

A: Both versions offer the same 16x4 character display functionality and I2C interface. The difference is purely visual — the Blue backlight provides a cool-toned, high-contrast display, while the Yellow-Green backlight offers a warmer, classic LCD appearance. Choose based on your project's design preference.

Q: Do I need any special libraries to use this LCD1604 I2C module?

A: Yes. For Arduino users, the most commonly used library is LiquidCrystal_I2C, which is freely available via the Arduino Library Manager. Once installed, you can initialize the display with just a few lines of code. The I2C address is typically 0x27 or 0x3F — you can use an I2C scanner sketch to confirm.

Q: How many GPIO pins does the I2C interface require?

A: Thanks to the integrated I2C serial interface adapter, this module only requires 4 connections: VCC (power), GND (ground), SDA (data), and SCL (clock). This is a major advantage over parallel LCD modules, which typically require 8 or more GPIO pins.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.