Blue 16x2 I2C LCD Module

Compact 16-character × 2-row alphanumeric LCD module with integrated I2C backpack. Physical size: ~80 mm × 36 mm × 12 mm; mass: approximately 25 grams. Constructed with a standard character LCD panel (HD44780-compatible) mounted on a dedicated PCB featuring male 0.1-inch pitch header pins. Blue backlight provides strong contrast against white characters. Communicates exclusively via I2C protocol (two-wire interface), requiring only power, ground, SCL and SDA connections. Fully compatible with Arduino UNO R3, Mega2560 and any microcontroller supporting standard I2C signalling. Designed for low-complexity, high-reliability text output — no graphics, no touch, no frame buffer. Delivers deterministic response times and minimal CPU load during updates, making it suitable for time-sensitive monitoring tasks. Typical applications include displaying live sensor data (e.g., BME280 environmental readings), guiding user input in DIY control panels, and printing debug variables during sketch testing — all with plug-and-play simplicity.