Keypad 4×4 Self-Adhesive 16 key
30.00 EGP
This 4×4 Self-Adhesive Keypad features 16 tactile membrane buttons arranged in a compact grid, perfect for user input in DIY electronics, access control systems, and interactive projects. The built-in adhesive backing allows for easy mounting, while the flexible, durable design ensures long-lasting performance.
Description
Key Features:
✔ 16-Button Matrix (4×4 Layout) – Ideal for numeric entry, menu navigation, or custom command input.
✔ Self-Adhesive Backing – Peel-and-stick installation on enclosures, control panels, or prototypes.
✔ Membrane Switch Technology – Quiet, dust-resistant, and spill-proof operation.
✔ 5V Logic Compatible – Works with Arduino, Raspberry Pi, ESP8266, and other microcontrollers.
✔ 8-Pin Connection (Row-Column Scanning) – Simple interfacing with minimal GPIO pins.
✔ 0.3mm Thick, Flexible Design – Fits tight spaces and curved surfaces.
✔ Long Lifespan – Rated for 1+ million presses per button.
Applications:
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Access Control – PIN pads for door locks or security systems.
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DIY Calculators & Menus – Input for Arduino/RPi projects.
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Industrial Control Panels – Low-cost HMI for machinery.
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Retro Gaming – Custom controller for arcade builds.
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Smart Home Interfaces – Control lights, alarms, or appliances.
Package Includes:
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1 × 4×4 Self-Adhesive Membrane Keypad (16 keys, 8-pin connector)
How It Works:
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Connect to Microcontroller – Wire rows/columns to digital pins (e.g., Arduino pins 2–9).
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Upload Code – Use a keypad library (e.g.,
Keypad.h
for Arduino) to detect button presses. -
Mount with Adhesive – Attach to any clean, flat surface.
Why Choose This Keypad?
✅ No Soldering Needed – Ready-to-use with breadboard-friendly pins.
✅ Low Power Consumption – Works with 3.3V or 5V systems.
✅ Customizable Labels – Write on the surface with a marker or add overlay stickers.
Note: Does not include pull-up resistors (may be required for some MCUs).
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