Description

4×4 Matrix Keypad Module: Compact Input Solution for Your Projects! ⌨️🔌

The 4×4 Matrix Keypad Module is a versatile and space-efficient input device perfect for microcontroller projects, access control systems, and interactive interfaces. With 16 tactile buttons arranged in a grid, this keypad uses an 8-pin row/column design to minimize wiring while maximizing functionality. Pre-soldered headers and M3 mounting holes make installation a breeze, whether you’re prototyping or integrating into a final product.

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Key Features:

✅ 16-Button Matrix: Input numbers, symbols, or custom commands with 16 responsive keys.
✅ Non-Encoded Design: Directly interface with microcontrollers (Arduino, Raspberry Pi, etc.) using just 8 pins.
✅ Space-Saving Design: Compact footprint ideal for tight spaces in enclosures or panels.
✅ Pre-Soldered Headers: Ready to plug into breadboards or PCBs—no soldering required!
✅ Durable Construction: Tactile microswitch buttons rated for long-term use.
✅ Easy Mounting: Four M3 screw holes for secure attachment.

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Technical Specifications:

• Layout: 4 rows x 4 columns (8 pins: R1-R4 for rows, L1-L4 for columns)
• Button Type: Microswitch tactile keys
• Mounting Holes: 4x M3 (3mm diameter)
• Compatibility: Works with 3.3V or 5V microcontrollers
• Dimensions: Compact design (exact size varies by model)

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How It Works:

1. Scan Rows: Set each row (R1-R4) to LOW one at a time.
2. Read Columns: Check the column pins (L1-L4). A LOW signal on a column indicates a pressed key at the intersection of the active row and column.
3. Debounce: Use software to filter noise and confirm key presses.

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Applications:

🔐 Access Control: Build keypad-based security systems for doors or safes.
📟 Data Entry: Create numeric interfaces for calculators, IoT devices, or menus.
🎮 Interactive Projects: Design custom controllers for games or automation systems.
🏭 Industrial Panels: Integrate into control systems for machinery or equipment.
🔧 Prototyping: Quickly add user input to Arduino/Raspberry Pi projects.

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Why Choose This Keypad?

• Simplified Wiring: 8 pins handle 16 keys, reducing clutter and I/O demands.
• Plug-and-Play: Pre-soldered headers save time and effort.
• Customizable: Map keys to any function in your code.
• Durability: Built to withstand frequent use in demanding environments.

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Package Includes:

1x 4×4 Matrix Keypad Module

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Order Now and Simplify Your Input Needs! 🚀

Ideal for hobbyists, engineers, and educators, the 4×4 Matrix Keypad Module offers a reliable and compact way to add user interaction to your projects. Order today and unlock endless possibilities for data entry, control, and creativity! 🌟