LCD 20X4 (2004) Blue Serial Backlight with IIC

Expanded 20 x 4 Alphanumeric Layout: Displays up to 80 characters simultaneously across 4 lines (20 characters per line) for rich telemetry, detailed system diagnostics, and complex menus.

Pre-Soldered I2C (IIC) Serial Adapter: Comes with an integrated I2C backpack module pre-soldered on the back, reducing digital pin usage down to just 2 communication pins (SDA and SCL) plus power.

Vibrant Blue Backlight with Crisp White Text: High-contrast STN display matrix ensures maximum character legibility in low-light, dark, or standard indoor workspace environments.

Onboard Contrast Adjustment Potentiometer: Features a built-in trimmer potentiometer on the I2C backpack for quick, precise tool-based contrast adjustment.

Standard HD44780 & PCF8574 Controller Support: Fully compatible with standard Arduino LiquidCrystal_I2C libraries and open-source Python drivers for Raspberry Pi.

Module Construction: Built on a multi-layer FR-4 glass epoxy printed circuit board featuring an integrated liquid crystal matrix and soldered I2C header pin connections.

Power Supply & Operating Voltage: Operates on standard 5V DC power logic. Use logic level shifters when connecting to 3.3V boards (like ESP32 or Raspberry Pi Pico) to ensure stable I2C communication.

Handling Precautions: Hold carefully by the outer circuit board edges. Avoid applying direct physical force or pressure on the front glass display panel.

Environmental Limits: Operating temperature range spans -10°C to +60°C. Keep protected from static discharge, conductive metal dust, and liquid moisture.

Maximum Screen Space with Minimal Pins: Highlight how the pre-soldered I2C backpack frees up up to 10 microcontroller GPIO pins while providing 4 lines of character real estate.

Ideal for Complex Control Panels: Market as the ideal display module for custom 3D printer interfaces, CNC controller consoles, multi-sensor weather stations, and rack-mounted equipment.

Recommended Cross-Sell Add-ons: Pair with Arduino UNO / Mega / Nano Boards, ESP32 Development Boards, 4-Pin Female-to-Female Jumper Wires, and Multi-Sensor Modules.

Clean Text Readout Solution: Position as an effortless, high-capacity text display solution for makers needing clear multi-line system status readouts without messy parallel wiring.