LCD 2004 I2C (TWI) 20×4 Display Module with Blue Backlight, Adjustable Contrast, Compatible with Arduino Uno R3 R4, ESP32, ESP8266, Raspberry Pi, Tutorials Included

LARGE I2C 20X4 CHARACTER DISPLAY MODULE – This I2C (TWI) 20×4 display shows up to 80 characters across four rows, making it perfect for displaying sensor data, logs, menus, or debug info in DIY electronics and Arduino projects.
BLUE BACKLIGHT DISPLAY WITH ADJUSTABLE CONTRAST – Features a vibrant blue backlight LCD and onboard potentiometer to fine-tune contrast, ensuring excellent readability in low or bright lighting—ideal for both indoor and outdoor Arduino Uno R3 or ESP32 projects.
I2C (TWI) COMMUNICATION TO SAVE PINS – Uses the I2C protocol (also known as TWI or Two-Wire Interface), which reduces the number of connections to just two signal wires—great for compact microcontroller setups using ESP8266, Raspberry Pi, and more.
FULLY COMPATIBLE WITH ARDUINO UNO R3 / R4, ESP32, ESP8266, RASPBERRY PI – Works seamlessly with Arduino Uno R3, the latest Arduino Uno R4, Raspberry Pi boards, and MicroPython-based controllers. Ideal for makers, students, and engineers.
ONLINE TUTORIALS INCLUDED – Easy-to-follow online guides walk you through setup, code examples, and integration with Arduino, ESP32, ESP8266, and Raspberry Pi. Just search: DIYables LCD 2004 I2C Display.

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