16×2 Blue LCD Display Module with I2C/IIC SerInterfaceial

The 16×2 Blue LCD Display Module with I2C Interface is a 16-character by 2-line blue backlight alphanumeric LCD with an I2C adapter module soldered directly onto the back of the PCB — reducing the connection from the 16-pin parallel wiring of the standard 1602 green and blue LCD modules down to just four wires (VCC, GND, SDA, SCL), which is the most significant practical difference between this module and the parallel-interface 1602 variants. The 16×2 blue lcd display with I2C is the preferred choice for Arduino, ESP32, and STM32 projects where available GPIO pins are limited, where breadboard wiring needs to be kept simple, or where the builder wants the same familiar 16×2 display output without occupying 6 to 11 digital pins for the parallel data and control lines.

The lcd display with i2c interface uses the LiquidCrystal_I2C library in the Arduino IDE — a separate library from the built-in LiquidCrystal used by the parallel 1602 modules, installed via the Arduino IDE Library Manager — and communicates with the microcontroller over the standard I2C bus at address 0x27 or 0x3F depending on the module variant. The 16×2 i2c lcd display shares the same SDA and SCL lines with other I2C devices on the same bus, allowing the builder to connect multiple I2C sensors and displays on just two wires simultaneously. The blue backlight with white text gives the same modern display appearance as the blue parallel 1602 variant, on the same 16×2 format showing 32 total characters across two rows.

Available from StemVolt, This 16×2 lcd module with I2C is ideal for Arduino ESP32 STM32 GPIO-limited sensor display project demo and STEM project 4-wire LCD serial interface builds in India.

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Features:

• I2C built-in — only 4 wires needed vs 16-pin parallel
• Frees 10+ GPIO pins — critical for ESP32 and sensor-heavy builds
• LiquidCrystal_I2C library — easy print commands same as parallel version
• Shares I2C bus — connect alongside sensors on same SDA SCL
• Blue backlight white text — same modern look as blue parallel variant

Technical Specifications:

Applications:

• ESP32 sensor project with limited GPIO using 16×2 i2c lcd display
• Simplifies wiring with lcd display with i2c interface module
• STEM project for 16×2 blue lcd display 4-wire I2C connection demo
• Arduino multi-sensor build sharing I2C bus with LCD and sensors
• 16×2 lcd module for I2C serial LCD interface wiring lab

Package Includes:

• 1 × 16×2 Blue LCD Display Module with I2C/IIC SerInterfaceial