I2C LCD Interface Module for 16x2 & 20x4 LCD Displays

The I2C LCD Interface Module is a convenient adapter board that enables 16x2 and 20x4 character LCD displays to communicate using the I2C protocol, significantly reducing the number of GPIO pins required by your microcontroller. Instead of connecting multiple parallel data lines, this module uses only two communication pins (SDA and SCL), making project wiring cleaner and easier.

Equipped with a commonly used I2C I/O expander IC and an onboard contrast adjustment potentiometer, the module is ideal for Arduino, ESP32, Raspberry Pi, NodeMCU, STM32, and other development platforms supporting I2C communication.

Whether you're building an IoT device, robotics project, digital display, smart home controller, industrial prototype, or educational electronics project, the I2C LCD Interface Module provides a reliable and space-saving solution for LCD integration.

Key Features

• Converts standard LCD displays to I2C communication
• Compatible with 16x2 and 20x4 character LCDs
• Reduces GPIO usage to only SDA and SCL pins
• Easy integration with Arduino, ESP32, Raspberry Pi, and STM32
• Onboard contrast adjustment potentiometer
• Compact PCB design for embedded projects
• Supports standard I2C communication protocol
• Simplifies wiring and improves project organization
• Low power consumption
• Suitable for IoT, robotics, automation, and embedded systems
• Ideal for beginners, students, and professional developers
• Compatible with widely available LCD libraries

Technical Specifications

Applications

• Arduino LCD Projects
• ESP32 Display Systems
• Raspberry Pi LCD Interface
• Home Automation Displays
• IoT Dashboards
• Industrial Control Panels
• Robotics Display Units
• Digital Measurement Systems
• Embedded Electronics Projects
• Smart Home Controllers
• Educational Electronics
• Engineering Prototypes

Package Includes

• 1 × I2C LCD Interface Module

Why Buy from Horizocart?

• Quality-tested interface modules
• Reliable I2C communication performance
• Secure packaging for safe delivery
• Fast shipping across India
• Technical support for makers, students, and professionals
• Trusted supplier for Arduino, ESP32, Raspberry Pi, robotics, and IoT components
• Ideal for educational, DIY, and industrial applications

Frequently Asked Questions

Q. Is this module compatible with a 16x2 LCD?

Yes. It is specifically designed to work with most standard 16x2 character LCD displays that support the corresponding interface.

Q. Can I use this module with a 20x4 LCD?

Yes. It is compatible with many standard 20x4 character LCD displays. Verify physical compatibility before installation.

Q. Does it work with ESP32?

Yes. The module supports I2C communication and can be used with ESP32 using the appropriate SDA and SCL pins.

Q. How many GPIO pins does this module require?

Only two I2C communication pins (SDA and SCL) are required, along with power connections.

Q. Can I adjust the LCD contrast?

Yes. The onboard potentiometer allows easy adjustment of the LCD contrast for optimal display visibility.