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4x4 matrix keypad module for Arduino projects

Keypad 4×4 available at Science Store

₨ 160
Category: SKU: CMP-5312

The 4×4 Matrix Keypad provides 16 keys for reliable numeric and command input. Perfect for Arduino projects, security systems, and STEM learning.

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

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