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LCD 20x4 Display with I2C Interface
₹270.0
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The LCD 20x4 Display with I2C interface is a versatile alphanumeric display module capable of showing 20 characters per line across 4 lines. With the I2C (Inter-Integrated Circuit) adapter already integrated, it simplifies wiring by reducing the required pins from 16 to just 2 (SDA & SCL). This makes it an excellent choice for projects using Arduino, Raspberry Pi, ESP32, ESP8266, and other microcontrollers. It provides a clear, bright, and easy-to-read display for projects involving data output, menus, and real-time status monitoring.
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Product Specifications
| Specification | Details |
|---|---|
| Display Type | 20x4 Alphanumeric LCD |
| Controller IC | HD44780 or compatible |
| Interface | I2C (using PCF8574 I2C backpack) |
| Communication Pins | SDA & SCL |
| Supply Voltage | 5V DC (some models compatible with 3.3V) |
| Current Consumption | ~2mA (without backlight), ~20mA (with backlight) |
| Character Size | 5x8 dots matrix |
| Adjustable Contrast | Via onboard potentiometer |
| Backlight | LED |
| Dimensions | ~98mm x 60mm x 14mm |
Key Features
- 20 characters × 4 lines for large data display
- I2C interface reduces wiring complexity (only 2 pins needed)
- Compatible with Arduino, Raspberry Pi, ESP32, STM32, and other microcontrollers
- Bright backlight with adjustable contrast for better visibility
- Pre-soldered I2C adapter (PCF8574 IC) for plug-and-play use
- Low power consumption, suitable for portable projects
- Easy integration using popular libraries (LiquidCrystal_I2C, etc.)
Applications
- DIY electronics and embedded systems projects
- IoT devices for displaying sensor data
- Industrial control panels and instrumentation
- Robotics for showing system status and menus
- Educational projects and prototyping
- Home automation system displays
- Data logging and monitoring systems
Frequently Asked Questions
It is compatible with Arduino, Raspberry Pi, ESP32, ESP8266, STM32, and most boards supporting I2C communication.
No, the display comes with a pre-soldered I2C backpack module.
Only 2 pins (SDA & SCL), in addition to VCC and GND.
Yes, you can adjust contrast using the onboard potentiometer, and the backlight can be turned on or off via software.
The popular LiquidCrystal_I2C library is commonly used to interface with this display.
