Specification:

Features:

1. 🔌 Only 2 Pins Required (SDA & SCL)

   • Thanks to the integrated I2C communication module (PCF8574), you only need two signal wires to control the display, making it perfect for boards with limited I/O.

2. 🟡 High Visibility Yellow Backlight

   • The bright yellow LED backlight with black characters ensures clear visibility in both low-light and bright environments — ideal for industrial and home automation projects.

3. 🧠 Compatible with Major Platforms

   • Fully supports popular development boards like:

   • Arduino (UNO, Nano, Mega)

   • Raspberry Pi (all models)

   • ESP32, ESP8266, NodeMCU

   • STM32, ATmega, PIC, and more.

4. 📚 Easy Coding with Library Support

   • Works with libraries like LiquidCrystal_I2C, which include ready-to-use functions for printing, cursor control, and display configuration.

5. 🔧 Precision Contrast Control

   • Built-in rotary potentiometer allows manual contrast adjustment to enhance character visibility under different ambient lighting.

6. 🧲 Modular & Stackable

   • Compact, board-mounted module with standard screw holes, perfect for integrating into custom dashboards, enclosures, or STEM projects.

7. 🔁 Fully Reusable for Multiple Projects

   • Can be disconnected and reused in different circuits or kits without degradation—ideal for prototyping and classroom environments.

8. 🔋 Energy Efficient

   • Low current consumption when backlight is enabled (~20mA), ideal for low-power or battery-operated systems.

9. 🧰 Robust PCB with Gold-Plated Pads

   • High-quality build with clearly labeled I2C pins, durable soldering, and long-life LED backlight.

10. 📐 Standard 5x8 Dot Matrix per Character

    • Displays crisp alphanumeric characters in two rows of 16, with each character composed of a 5x8 pixel matrix.

11. 💡 Programmable Display Options

    • Control text direction (left/right), cursor position, blinking or solid cursor, scroll text, and clear display commands via code.

12. 📦 Compact & Lightweight for Mobile Use

    • Ideal for embedded displays in handheld instruments, robots, and compact control panels.

13. 🖨️ Supports Custom Characters (CGROM)

    • You can define and upload up to 8 custom characters (like arrows, symbols, or icons) using CGRAM.

14. 🔍 I2C Address Scannable & Configurable

    • Default I2C address is usually 0x27 or 0x3F, but it can be scanned and confirmed via simple Arduino scripts.

15. 🧑🏫 Classroom-Friendly & STEM-Ready

    • An essential tool in electronics education, enabling students to visualize real-time data like temperature, sensor values, or simple messages.

Description:

The 1602 LCD Display with I2C Interface and Yellow Backlight is a versatile and compact screen module designed to simplify the process of adding a user interface or live data feedback to embedded systems. It features a 2-row, 16-character alphanumeric layout, allowing up to 32 characters to be displayed at once. Each character is rendered using a 5x8 dot matrix, providing sharp, easy-to-read text.

What sets this module apart is the inclusion of a pre-soldered I2C backpack adapter based on the PCF8574 I/O expander IC. Traditional 1602 LCDs require 12 or more GPIO pins to operate. This version reduces the connection requirement to just two digital lines – SDA (data) and SCL (clock) – making it ideal for microcontrollers or SBCs with limited I/O such as Arduino, NodeMCU, Raspberry Pi, or ESP32.

The display features a vibrant yellow LED backlight with black text, offering excellent contrast and readability from various viewing angles. It's suitable for environments with varying light conditions, including classrooms, workshops, or field-deployed systems.

This module is a popular choice in STEM education kits, DIY electronics, industrial control panels, robotics, smart home systems, and IoT applications. Its durable construction and compatibility with a wide array of programming libraries and platforms make it a go-to solution for both beginners and experienced developers.

Whether you're building a temperature display, a menu-based control interface, or a real-time sensor monitor, this display provides a clear, power-efficient, and easily programmable solution.

✅ Key Highlights:

• 16x2 LCD Display with high-contrast yellow backlight

• I2C interface (only 2 wires needed) for easy connectivity

• Fully compatible with LiquidCrystal_I2C and other libraries

• Built-in contrast adjustment potentiometer

• Ideal for use with Arduino, ESP32, Raspberry Pi, STM32, and other development platforms

• Lightweight, low power, and perfect for prototyping or permanent installations