I2C for lcd 16×2 20×4

🔹 I2C Backpack Module for LCD 16×2 & 20×4 Displays

This I2C interface module makes it easy to connect your 16×2 or 20×4 character LCD to Arduino, ESP32, Raspberry Pi, and other microcontrollers using only 2 data pins (SDA & SCL). It eliminates the need for multiple digital pins, saving space for other sensors and modules.

✅ Specifications:

• Compatibility: LCD 16×2 / 20×4 (HD44780 driver)

• Communication: I2C (SDA, SCL)

• Operating Voltage: 5V

• Adjustable contrast control via onboard potentiometer

• Built-in backlight control jumper

• Default I2C Address: 0x27 (adjustable to 0x3F)

• Connector: 4-pin (VCC, GND, SDA, SCL)

• Reduces pin usage from 8+ to just 2 pins

📦 Applications:
✔️ Arduino & ESP32 projects
✔️ Raspberry Pi LCD interface
✔️ DIY electronics & prototyping
✔️ Data loggers, clocks, and display modules
✔️ Robotics and embedded systems