The IIC/I2C Serial Interface Adapter Module is a small PCF8574-based board that attaches to the back of a standard HD44780 character LCD display — such as a 16×2 or 20×4 LCD — and converts the display’s parallel data interface into a 2-wire I2C connection, so an Arduino only needs SDA and SCL pins to control the LCD instead of the 6 to 8 GPIO pins a direct LCD connection would require. This i2c serial interface module is one of the most common additions to Arduino LCD builds in India because it frees up four or more Arduino pins that would otherwise be permanently used by the display, leaving them available for additional sensors, buttons, or other components in the project.
The i2c converter’s PCF8574 controller IC handles the conversion between the I2C two-wire protocol and the LCD’s parallel data lines entirely in hardware — the Arduino sends display commands over SDA and SCL, and the PCF8574 translates them into the 8-bit parallel signals the LCD panel needs, with no extra processing required from the Arduino itself. The iic i2c serial interface adapter includes address selection via solder jumpers (A0, A1, A2 pads on the board), allowing builders to assign different I2C addresses to multiple LCD modules so all of them can share the same SDA and SCL bus without address conflicts.
The iic/i2c module’s backlight is controlled by a removable jumper short it to keep the backlight on, remove it to turn the backlight off permanently and save power in battery builds. Available from StemVolt, offering quality electronics modules.
Related Product:
- Checkout Blue LCD Display Module with I2C/IIC
- Explore Interface Module
Features:
- PCF8574 IC handles parallel conversion without Arduino processing
- Address solder jumpers allow multiple LCDs on one I2C bus
- Backlight jumper selects LCD backlight on or off permanently
- Compatible with 16×2 and 20×4 HD44780 character LCD displays
Technical Specifications:
Applications:
- Arduino 16×2 LCD display with only SDA SCL two-pin wiring
- Project for iic i2c adapter for multiple LCD I2C bus demo
- Battery-powered display project with backlight jumper off for saving power
- i2c serial interface adapter for LCD address conflict experiment
Package Includes:
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1 x IIC/I2C Serial Interface Adapter Module
Varun Saxena –
Worth every rupee spent
Rohit Mathur –
Tracking available throughout delivery
Nikhil Chaturvedi –
Responsive support and nationwide delivery made this module a dependable choice for makers.
Vishal Khandelwal –
Best purchase for LCD projects
Mohit Rajpurohit –
Product quality exceeded expectations, making it perfect for electronics and educational projects.
Rajiv Lalwani –
I2C serial interface module worked flawlessly and simplified LCD connections with my arduino project.
Chetan Sharma –
Multiple payment options and secure packaging ensured a smooth and reliable shopping experience.
Sachin Agrawal –
Tamper-proof packaging was excellent