4×4 Matrix Keypad Module for Arduino & Raspberry Pi | 16-Button Input Keyboard

The 4×4 Matrix Keypad Module is a compact and easy-to-use 16-button keyboard interface that is perfect for embedded systems and microcontroller projects. Featuring 16 tactile push buttons arranged in a matrix of 4 rows and 4 columns, it allows efficient user input with minimal pin usage—ideal for menus, passcodes, numeric inputs, and custom control panels.

This keypad integrates smoothly with Arduino, Raspberry Pi, ESP32, STM32, and other microcontroller platforms using a simple scanning technique. The soft-touch membrane and thin, flexible design make it ideal for DIY electronics, embedded control systems, or user interfaces in compact projects.

✅ Key Features:

• 4×4 matrix layout with 16 tactile push buttons

• Thin, flexible membrane design

• Compatible with most microcontrollers via digital pins

• Easy-to-integrate with libraries like Keypad.h (Arduino)

• Lightweight and durable for long-lasting use

• Simple 8-pin interface for row/column scanning

🛠️ Applications:

• Digital locks and password entry systems

• Custom menu navigation in Arduino interfaces

• Security and authentication panels

• DIY calculator or control panel projects

• Keypad-based user inputs for automation systems

• Robotics or mechatronics interface panels