4×4 Matrix Keypad Module

The 4×4 Matrix Keypad is a compact input module featuring *16 tactile keys (0–9, A–D, , #) arranged in a matrix format. It’s ideal for password entry, menu navigation, access control, and robotics projects. Using row-column scanning, it requires fewer I/O pins and interfaces easily with Arduino, ESP32, and other microcontrollers.

Key Features

• Layout: 4 Rows × 4 Columns (16 keys)

• Key Types: 0–9, A–D, *, #

• Interface: Matrix (row/column scanning)

• Operating Voltage: 3.3V – 5V DC

• Low Power Consumption

• Durable Membrane / Button Design

• Easy Integration with Keypad Library

Applications / Arduino Projects

• Password & PIN-based locks

• Access control systems

• Menu navigation & settings input

• Calculator & data entry projects

• Robotics control panels

• STEM & school electronics kits

Compatibility

• Arduino Uno / Nano / Mega

• ESP32 / ESP8266

• Raspberry Pi (GPIO)

• Other digital I/O microcontrollers

How It Works (Simple)

• Keys are arranged in rows and columns

• Pressing a key connects a specific row and column

• Microcontroller scans pin to detect which key is pressed

Why Buy from ScienceStore.pk?

• Tested, classroom-friendly modules

• Ideal for students, teachers & makers

• Fast delivery across Pakistan

• Perfect for labs, workshops & competitions