LCD1602 I2C Module PCF8574 IIC Blue Green Screen Display

LCD1602 I2C Display Module with PCF8574 IIC Backpack Adapter

Upgrade your electronics projects with the LCD1602 I2C Module — a versatile 16x2 character liquid crystal display paired with a PCF8574 IIC backpack adapter. This compact, easy-to-wire module simplifies your builds by reducing the GPIO pin count needed from over 6 pins down to just 2 (SDA + SCL), making it ideal for Arduino, Raspberry Pi, and other microcontroller platforms.

Key Features

• I2C/IIC Interface: Uses the PCF8574 I/O expander chip for streamlined 2-wire communication, freeing up valuable pins on your microcontroller.
• 16x2 Character Display: Displays up to 32 characters across two rows — perfect for sensor readouts, menus, status messages, and more.
• Two Backlight Color Options: Available in classic Blue (white text on blue background) or crisp Green (black text on green background) to suit your project aesthetic.
• Adjustable Contrast: On-board potentiometer lets you fine-tune display contrast for optimal readability in any lighting condition.
• Breadboard & PCB Friendly: Compact form factor with standard pin spacing for easy prototyping and permanent installations.
• Wide Compatibility: Works seamlessly with Arduino Uno, Mega, Nano, ESP8266, ESP32, Raspberry Pi, and most I2C-compatible microcontrollers.
• Customizable: Available in multiple configurations — bare LCD1602 (blue or green) and pre-soldered I2C module versions.

Specifications

• Display Type: LCD1602 (16 columns × 2 rows)
• Interface: I2C / IIC (PCF8574 chip)
• Operating Voltage: 5V DC
• I2C Address: 0x27 (default, adjustable via solder jumpers)
• Backlight Colors: Blue or Green
• Character Size: 5×8 dot matrix
• Viewing Angle: ~180°

Available Variants

• 1602 I2C Blue (pre-soldered)
• LCD1602 Blue (bare module)
• LCD1602 Module (standard)
• LCD1602 Green (bare module)
• 1602 I2C Green (pre-soldered)

What's in the Box

• 1 × LCD1602 Display Module (with or without I2C adapter, depending on variant selected)

Perfect For

• Arduino & Raspberry Pi DIY projects
• Sensor data display (temperature, humidity, distance, etc.)
• DIY clocks, timers, and counters
• Robotics and automation builds
• Maker spaces, classrooms, and electronics hobbyists

Explore More DIY Electronics & Maker Supplies

Looking to complete your project toolkit? Check out these related items from our store:

• 4/6mm CCB Flat Round Spacer Beads DIY Jewelry Making 100-200pcs
• Round Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What is the LCD1602 I2C module and what does it do?

A: The LCD1602 I2C module is a 16x2 character liquid crystal display combined with a PCF8574 IIC backpack adapter. It displays text and numeric data from a microcontroller (such as Arduino or Raspberry Pi) using just two communication wires (SDA and SCL), making wiring clean and simple for any electronics project.

Q: What is the difference between the bare LCD1602 and the I2C (IIC) version?

A: The bare LCD1602 module connects directly to your microcontroller but requires 6+ GPIO pins. The I2C version includes a PCF8574 backpack adapter already soldered on, which converts the interface to just 2 pins (SDA + SCL via I2C protocol), significantly reducing wiring complexity and pin usage.

Q: Is this module compatible with Arduino and Raspberry Pi?

A: Yes! The LCD1602 I2C module is widely compatible with Arduino Uno, Mega, Nano, ESP8266, ESP32, Raspberry Pi, and virtually any microcontroller that supports the I2C communication protocol. Libraries such as LiquidCrystal_I2C are freely available for quick setup.

Q: What I2C address does the PCF8574 module use?

A: The default I2C address is 0x27. Most modules also include solder jumper pads on the back that allow you to change the address (e.g., to 0x20–0x27 range) if you need to run multiple LCD modules on the same I2C bus.

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.