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 uses the standard HD44780 16-pin parallel interface and connects to Arduino, ESP32, ESP8266, Raspberry Pi, or any microcontroller with enough free GPIO pins, in either 4-bit or 8-bit mode. A separate PCF8574 I2C backpack adapter can be added if you prefer to drive it over I2C with just two wires.
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
- HD44780 Parallel Interface — Standard 16 pin header supporting 4-bit or 8-bit parallel wiring, the interface every Arduino LCD example uses
- Arduino & ESP32 Compatible — Works with Arduino, ESP32, ESP8266, Raspberry Pi, and any microcontroller with enough free GPIO pins
- Library Support — Works with the built-in LiquidCrystal library in the Arduino IDE 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 | HD44780 parallel, 16 pin header (4-bit or 8-bit) |
| Pin Header | Presoldered 16 pin single row |
| Operating Voltage | 5V DC |
| Package Quantity | 1 piece |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi, any microcontroller with free GPIO |
| Applications | Sensor displays, system monitors, menu interfaces, IoT dashboards |
Library
Tutorials
COMPATIBLE HARDWARE
- Arduino boards (UNO, Mega, Nano, etc.) — Parallel 4-bit or 8-bit wiring, 5V supply
- Arduino Uno R4 WiFi/Minima — Parallel 4-bit or 8-bit wiring
- Arduino Nano ESP32 — Parallel wiring, 5V supply for the panel
- ESP32 development boards — Parallel wiring using six or more free GPIO pins
- ESP8266 boards (NodeMCU, Wemos D1, etc.) — Parallel wiring, limited free GPIO so a backpack may suit better
- Raspberry Pi (all models) — Parallel wiring via GPIO
- Raspberry Pi Pico — Parallel wiring via GPIO
- PCF8574 I2C backpack adapter (sold separately) — Solder to the 16 pin header to drive the display over I2C
- Any microcontroller with enough free GPIO — 5V supply for the panel and backlight
