Product Name:

I2C Serial Interface Adapter Module for 16x2 (1602) Character LCD

Product Description:

The I2C Serial Interface Adapter Module is a compact and convenient add-on designed to simplify the connection of a 16×2 (1602) Character LCD to microcontrollers. Instead of using multiple digital pins, this module allows communication using only two wires (SDA & SCL) through the I2C protocol.

Built with the PCF8574 I/O expander chip, it provides reliable performance and reduces wiring complexity—making it ideal for Arduino, ESP32, ESP8266, Raspberry Pi, PIC, AVR, and STM32 projects.

This module is perfect for users who want to save I/O pins while keeping their project neat, simple, and easy to debug.

Key Features:

• I2C Communication: Requires only 2 wires (SDA, SCL)

• PCF8574 Chip: Stable and efficient I/O expansion

• Adjustable Contrast: Onboard potentiometer for LCD contrast control

• Backlight Control: Jumper to enable/disable LCD backlighting

• Easy Integration: Standard 4-pin I2C header (VCC, GND, SDA, SCL)

• Address Configurable: Via solder jumpers (typically 0x27 or 0x3F)

• Reduces Wiring: Saves up to 8–10 microcontroller pins

• Compatible With:

  • 16×2 LCD

  • 20×4 LCD

  • Arduino, Raspberry Pi, ESP8266, ESP32, STM32, PIC, AVR

Applications:

• Arduino and microcontroller-based projects

• IoT and smart device displays

• Home automation interfaces

• Educational and STEM electronics

• Robotics control panels

• Prototype display systems

Why Choose This Module?

This I2C adapter is a must-have for anyone using an LCD display in their project. It makes LCD wiring simple, clean, and pin-efficient, improving both workflow and project performance.