LCD1602 16x2 I2C LCD Display Module PCF8574 5V – Blue Screen
LCD1602 16x2 I2C LCD Display Module PCF8574 5V – Blue Screen
LCD1602 16x2 Character LCD Display Module with I2C/IIC Interface
Upgrade your electronics projects with this versatile LCD1602 16x2 Character Display Module. Featuring a crisp blue backlight and a built-in PCF8574T/PCF8574 I2C adapter, this module dramatically reduces the number of GPIO pins required — making it ideal for Arduino, Raspberry Pi, and other microcontroller-based projects. Simple wiring, easy library support, and a compact form factor make it a go-to display solution for hobbyists and professionals alike.
Key Features
- 16x2 Character Display: Shows up to 2 lines of 16 characters each for clear, readable output.
- I2C / IIC Interface: Onboard PCF8574T/PCF8574 I/O expander reduces wiring to just 4 pins (VCC, GND, SDA, SCL).
- Blue Backlight: Wide viewing angle and high-contrast display for excellent readability in various lighting conditions.
- HD44780-Compatible Controller: Industry-standard controller ensures broad compatibility with existing libraries and code.
- 5V DC Operation: Standard logic voltage compatible with most popular development boards.
- Adjustable Contrast: On-board potentiometer lets you fine-tune display contrast with ease.
- Compact Form Factor: Module dimensions: 80mm × 35mm × 11mm; Viewing area: 64.5mm × 16mm.
Technical Specifications
| Display Type | Character LCD (LCM) |
| Resolution | 16 × 2 Characters |
| Interface | I2C / IIC (PCF8574T / PCF8574) |
| Supply Voltage | 5V DC |
| Backlight Color | Blue |
| LCD Controller | HD44780-equivalent |
| Module Dimensions | 80mm × 35mm × 11mm |
| Viewing Area | 64.5mm × 16mm |
| Country of Origin | Made in China |
Common Applications
- Arduino and Raspberry Pi projects
- DIY electronics and prototyping
- Industrial test and measurement equipment
- Networking devices (routers, storage equipment)
- Copiers, fax machines, and laser printers
- Home automation displays
What's in the Box
- 1× LCD1602 16x2 Display Module with I2C Adapter
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: Is this LCD1602 module compatible with Arduino?
A: Yes! The LCD1602 module with I2C interface is fully compatible with Arduino boards. You can use popular libraries such as the LiquidCrystal_I2C library to get started quickly with minimal wiring — only 4 connections needed (VCC, GND, SDA, SCL).
Q: What is the I2C address of the PCF8574T adapter on this module?
A: The default I2C address for the PCF8574T is typically 0x27. However, you can use an I2C scanner sketch to confirm the address on your specific module, as some variants using the PCF8574 (non-T) may use 0x3F.
Q: Can this module run on 3.3V systems like a Raspberry Pi?
A: This module is designed for 5V DC operation. While many Raspberry Pi projects use a 3.3V logic level, a logic level converter or a 5V power supply with appropriate I2C level shifting is recommended to ensure reliable and safe operation.
Q: How do I adjust the display contrast on the LCD1602 module?
A: The module includes an onboard potentiometer (small blue screw adjustment). Simply turn it with a small screwdriver while the module is powered on to achieve your desired contrast level until the characters are clearly visible.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.