LCD 20X4 (2004) Yellow Serial Backlight with IIC

Expanded 20 x 4 Character Capacity: Displays up to 80 alphanumeric characters across 4 lines (20 characters per line), providing ample screen real estate for complex sensor data, system status, and menu interfaces.

Pre-Soldered I2C/IIC Backpack: Integrated PCF8574 serial interface adapter simplifies wiring down to just 4 pins (VCC, GND, SDA, SCL), preserving valuable microcontroller I/O pins.

Warm Yellow-Green Illuminated Backlight: High-contrast STN display matrix features sharp dark characters against a soft yellow-green illuminated background, ensuring high legibility in various lighting conditions.

Onboard Contrast & Backlight Adjustments: Includes a built-in multi-turn trimmer potentiometer for precise screen contrast calibration and a removable jumper header for manual backlight control.

Broad Library & Framework Support: Fully compatible with standard microcontroller libraries like LiquidCrystal_I2C, enabling seamless integration with Arduino, ESP32, ESP8266, and Raspberry Pi.

Module Construction: Built on a multi-layer FR-4 glass epoxy printed circuit board featuring a pre-soldered I2C backpack board, protective metal LCD frame, and glass display matrix.

Power Supply & Operating Voltage: Operates on standard 5V DC logic power. When connecting to 3.3V logic microcontrollers (such as ESP32 or Raspberry Pi Pico), use logic level converters on signal lines (SDA, SCL).

Handling Precautions: Hold carefully by the outer circuit board edges. Avoid applying direct pressure or heavy force onto the central liquid crystal display panel.

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

High-Capacity Text Display Solution: Position as the ultimate upgrade over standard 16x2 screens for projects requiring multi-line telemetry displays without moving to complex graphical interfaces.

Simplified 4-Wire Connection: Highlight the pre-assembled I2C module as a key convenience feature that eliminates breadboard wiring clutter and saves digital pins.

Recommended Cross-Sell Add-ons: Pair with Arduino UNO / Mega / Nano Boards, ESP32 IoT Boards, and Female-to-Female Jumper Wires.

Ideal for Custom Control Dashboards: Perfect for displaying multi-sensor telemetry, 3D printer status panels, weather monitoring stations, and automation controller menus.