16×4 Character LCD Display Module with I2C Serial Interface (1604 LCD + I2C Backpack)

16×4 Character LCD with I2C Backpack

This 16×4 Character LCD Module provides a simple and reliable way to display text in embedded electronics projects. Equipped with a pre-installed I2C serial interface (PCF8574-based backpack), it requires only four wires (VCC, GND, SDA, and SCL), saving valuable GPIO pins compared to the standard 16-pin parallel interface.

The module can display 16 characters per line across 4 lines, making it suitable for menus, sensor readings, system status, clocks, user interfaces, and debugging information.

Compatible with popular development boards including Arduino UNO, Mega, Nano, ESP32, ESP8266, Raspberry Pi, STM32, and PIC microcontrollers.

Key Features
16 characters × 4 lines LCD display
Built-in I2C serial interface for simplified wiring
Uses only four connections (VCC, GND, SDA, SCL)
Adjustable display contrast via onboard potentiometer
LED backlight for improved visibility
Compatible with standard LiquidCrystal_I2C libraries
Saves microcontroller GPIO pins
Low power consumption
Standard HD44780-compatible controller
Easy integration into Arduino IDE projects
Specifications
Display Type: Character LCD
Display Format: 16 × 4 (64 characters)
Interface: I2C (PCF8574 backpack)
LCD Controller: HD44780 compatible
Operating Voltage: 5V DC
Communication: I2C
Typical I2C Address: 0x27 (may vary to 0x3F depending on module)
Backlight: LED
Contrast Adjustment: Onboard potentiometer
Mounting Holes: Yes
Applications
Arduino projects
ESP32 and ESP8266 projects
Raspberry Pi displays
Robotics
IoT devices
Sensor monitoring systems
Digital clocks
Weather stations
Smart home interfaces
Industrial control panels
Menu-driven embedded systems
Educational electronics projects
Package Includes
1 × 16×4 Character LCD Module
1 × I2C Serial Backpack (pre-installed)