16x2 LCD I2C Interface Adapter

Product Description

The 16×2 LCD I2C Interface Adapter is a compact converter board that adds an I2C serial communication interface to standard 16×2 character LCD modules. By using this adapter, you can drive a 16×2 HD44780 display using only two microcontroller pins (SDA & SCL), significantly reducing wiring complexity compared to the parallel interface. This adapter board typically uses a PCF8574 I/O expander chip, making it easy to integrate with Arduino, ESP32, STM32, Raspberry Pi, and other microcontrollers that support I2C.

Especially useful in embedded and IoT display projects, the adapter simplifies display control, speeds up development, and frees up digital I/O for other components. It is compatible with popular libraries like LiquidCrystal_I2C for Arduino and similar I2C LCD libraries for other platforms.

Key Features

• Adds I2C interface to 16×2 character LCD

  
  

• Uses PCF8574 I/O expander

  
  

• Reduces pin count from parallel to 2 pins (SDA & SCL)

  
  

• Easy integration with microcontrollers

  
  

• Works with Arduino, ESP32, Raspberry Pi

  
  

• Compatible with LiquidCrystal_I2C library

  
  

Package Includes

• 1 × 16×2 LCD I2C Interface Adapter Module

  
  

Technical Specifications

Applications

• LCD display projects with microcontrollers

  
  

• IoT dashboards & data display

  
  

• Robotics status panels

  
  

• Embedded user interfaces

  
  

• Sensor reading visual display

  
  

• Breadboard and prototyping display modules