DIYables LCD 2004 20x4 Display Module Blue Backlight for Arduino ESP32 ESP8266 Raspberry Pi, Presoldered Character LCD Screen with Tutorials
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Quick Overview
The DIYables LCD 2004 is a 20×4 character LCD display module with a vivid blue backlight and white characters, based on the HD44780-compatible controller. It features an I2C interface for simplified wiring, requiring only two data lines (SDA and SCL) to connect to Arduino, ESP32, ESP8266, Raspberry Pi, or any other I2C-capable microcontroller.
Pin headers come pre-soldered, allowing the module to connect directly to a breadboard or jumper wires without any additional soldering. With a 20-column × 4-row character grid, it provides significantly more display space than the standard 16×2 LCD, making it well-suited for dashboards, menus, and status readouts.
Ideal for embedded projects requiring extended text output, such as sensor data displays, system monitors, menu interfaces, and IoT dashboards on Arduino, ESP32, ESP8266, and Raspberry Pi.
Key Features
- 20×4 Character Display — Large 80-character grid (20 columns × 4 rows) for extended text output compared to standard 16×2 modules
- Blue Backlight — Bright blue backlight with white characters for clear readability in varied lighting conditions
- Presoldered Ready to Use — Pin headers pre-soldered for instant breadboard and jumper wire connection, no soldering required
- I2C Interface — Uses only 2 data wires (SDA + SCL), freeing up GPIO pins compared to parallel wiring
- Arduino & ESP32 Compatible — Works with Arduino, ESP32, ESP8266, Raspberry Pi, and any I2C-capable microcontroller
- Library Support — Compatible with LiquidCrystal_I2C and similar libraries for fast, straightforward code integration
- Tutorial Support — Tutorials available for quick setup and development across major platforms
- Low Power Consumption — Efficient backlight and HD44780-compatible controller for stable operation in embedded systems
SPECIFICATION
| Specification | Value |
|---|---|
| Product Type | Character LCD Display Module |
| Model | LCD2004 (HD44780 compatible) |
| Display Type | Character LCD |
| Characters | 20 columns × 4 rows (80 characters total) |
| Backlight Color | Blue (white text) |
| Interface | I2C (SDA + SCL) |
| I2C Address | 0x27 (default, adjustable via solder jumpers) |
| Operating Voltage | 5V DC |
| Package Quantity | 1 piece |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi, any I2C microcontroller |
| Applications | Sensor displays, system monitors, menu interfaces, IoT dashboards |
Library
COMPATIBLE HARDWARE
- Arduino boards (UNO, Mega, Nano, etc.) — Via I2C (SDA + SCL) at 5V
- Arduino Uno R4 WiFi/Minima — Via I2C interface
- Arduino Nano ESP32 — Via I2C at 3.3V (with level shifting if needed)
- ESP32 development boards — Via I2C (GPIO21 SDA, GPIO22 SCL by default)
- ESP8266 boards (NodeMCU, Wemos D1, etc.) — Via I2C (GPIO4 SDA, GPIO5 SCL)
- Raspberry Pi (all models) — Via I2C (GPIO2 SDA, GPIO3 SCL)
- Raspberry Pi Pico — Via I2C interface
- Any microcontroller with I2C interface — Compatible at 5V logic level