The 4x4 Matrix 16 Keypad Keyboard Module is a reliable input device designed for Arduino, microcontrollers, and DIY electronics projects. With 16 tactile keys arranged in a 4×4 matrix, this keypad allows users to input numbers, commands, and data seamlessly. It is widely used in embedded systems, password-protected projects, access control systems, and robotics projects in Bangladesh.

This keypad module is compatible with the Arduino Keypad Library, making it simple to integrate with any microcontroller. The compact design, durable build, and pre-soldered pin headers make it ideal for students, hobbyists, and engineers working on electronics projects.

If you are looking for a low-cost and durable keypad module in Bangladesh, this 4x4 matrix keypad is the perfect choice.

Features:

• 16 tactile keys arranged in a 4x4 matrix layout

• Works with Arduino, PIC, AVR, ARM, Raspberry Pi, and other microcontrollers

• Compatible with the Arduino Keypad Library for easy coding

• Simple wiring with R1–R4 and L1–L4 pin configuration

• Sturdy build with pre-soldered pin headers for quick installation

• Perfect for password input, calculators, robotics, and access control projects

• Compact design with M3 mounting holes for easy setup

Specifications:

• Type: 4x4 Matrix Keypad Module

• Keys: 16 (arranged in 4 rows × 4 columns)

• Interface: 8-pin (R1–R4 for rows, L1–L4 for columns)

• Key Type: Microswitch tactile buttons

• Mounting Holes: 4 × 3mm (M3) mounting holes

• Compatibility: Arduino, Raspberry Pi, STM32, PIC, AVR, ARM, ESP32, and other MCUs

• Material: Durable PCB with labeled pins

• Dimensions: Standard compact size, easy to integrate in projects

Applications:

• Arduino projects and DIY electronics

• Password-protected locks and security systems

• Home automation projects

• Data entry for embedded systems

• Robotics control panels

• Mini calculators and digital input devices