I2C Serial Interface Board Module for LCD Display
I2C Serial Interface Board Module (PCF8574) for LCD Displays
The I2C Serial Interface Board Module, commonly known as the PCF8574 IIC LCD Adapter, allows you to connect standard 16x2 (1602) and 20x4 (2004) LCD displays using only two microcontroller pins. Instead of consuming multiple GPIO pins, this compact module communicates through the I2C protocol, making your embedded projects cleaner, simpler, and more efficient.
It is widely used in Arduino, ESP32, ESP8266, STM32, Raspberry Pi, AVR, PIC, and other microcontroller-based projects. The onboard PCF8574 I/O expander IC converts parallel LCD communication into I2C serial communication, significantly reducing wiring complexity.
Whether you're a university student, robotics enthusiast, IoT developer, or professional embedded engineer in Bangladesh, this module is an essential accessory for LCD interfacing.
Ideal for DIY electronics, automation, robotics, industrial control, smart home, IoT, weather stations, data loggers, digital meters, and educational laboratory projects.
Features:
- Converts parallel LCD to I2C communication
- Built-in PCF8574 I/O Expander IC
- Supports 16x2 and 20x4 LCD displays
- Uses only SDA and SCL pins
- Adjustable LCD contrast potentiometer
- Built-in backlight control
- Easy address selection via solder pads
- Simple wiring and installation
- Compatible with Arduino LiquidCrystal_I2C Library
- Stable and reliable communication
- Ideal for embedded systems and IoT projects
- Low power consumption
- Reduces GPIO pin usage dramatically
Specifications:
| Specification | Details |
|---|---|
| Product Name | I2C Serial Interface Board Module |
| IC | PCF8574 |
| Communication | I2C (IIC) |
| Operating Voltage | 5V DC |
| LCD Support | 1602, 2004 Character LCD |
| Interface | SDA, SCL |
| Adjustable Contrast | Yes |
| Backlight Control | Yes |
| I2C Address | 0x20–0x27 (configurable depending on jumper configuration) |
| PCB Color | Blue (may vary) |
| Mounting | Direct LCD Mount |
| Dimensions | Approx. 41 × 19 mm |
| Weight | Approx. 5g |
Applications:
- Arduino Projects
- ESP32 Projects
- ESP8266 Projects
- Raspberry Pi LCD Interface
- STM32 Development
- PIC Microcontroller Projects
- AVR Projects
- Robotics
- Industrial Automation
- Smart Home Systems
- IoT Devices
- Weather Station
- Home Automation
- DIY Electronics
- University Laboratory Projects
- Embedded System Learning
- Final Year Engineering Projects
Package Includes:
- 1 × I2C Serial Interface Board Module (PCF8574)
Why Buy from bdelectronics.xyz?
- Genuine Electronic Components
- Fast Delivery Across Bangladesh
- Affordable Price
- Quality Checked Products
- Trusted by Students & Engineers
- Technical Support
- Secure Packaging
- Ideal for Educational and Industrial Projects
Frequently Asked Questions
Questions & Answers
Ask a Question
No questions yet. Be the first to ask!
Customer Reviews
No reviews yet. Be the first to review!
Related Products
