LCD 1602 I2C

The LCD 1602 I2C Interface Module is designed to simplify the connection between a 16×2 LCD display and a microcontroller. Instead of using multiple digital pins, the I2C module allows the display to communicate using only two signal lines (SDA and SCL).

This version comes with a black PCB board and supports standard HD44780-compatible LCD1602 displays. It is based on the PCF8574 I/O expander chip, which converts I2C signals into parallel signals required by the LCD.

The module also includes an adjustable potentiometer for display contrast control, making it easy to fine-tune the screen visibility.

It is widely used in Arduino, ESP32, ESP8266, and Raspberry Pi projects where saving GPIO pins is important.

Key Features

• Compatible with LCD1602 (16×2) displays

• I2C communication interface

• Based on PCF8574 I/O expander chip

• Blue backlight support

• Black PCB board design

• Adjustable contrast potentiometer

• Reduces LCD connection from 16 pins to only 4 pins

• Compatible with Arduino, ESP32, ESP8266, Raspberry Pi

Technical Specifications

• Operating Voltage: 5V

• Communication Protocol: I2C

• I2C Pins: GND, VCC, SDA, SCL

• Default I2C Address: 0x27 or 0x3F (depending on module)

Applications

• Arduino display projects

• Sensor data monitoring

• IoT devices

• Embedded systems

• Smart home displays

Package Includes

• 1 × LCD 1602 I2C Interface Module (Blue Backlight, Black Board)