4x4 Matrix Flexible Keypad
The 4x4 Matrix Flexible Keypad is a compact and lightweight input device designed for microcontroller-based projects like Arduino, ESP32, and Raspberry Pi. It features 16 tactile buttons arranged in a 4x4 matrix, making it perfect for password entry systems, calculators, home automation panels, and DIY electronics projects.
This flexible membrane keypad is built using durable polyester material, ensuring long-lasting performance while maintaining a slim profile. Its adhesive backing allows easy mounting on surfaces like plastic enclosures, project boxes, or control panels.
For Bangladeshi students and engineers, this keypad is a budget-friendly and essential component for learning embedded systems and building real-world projects.
Features:
- 16-button (4x4) matrix layout
- Thin, flexible membrane design
- Easy interface with Arduino, ESP32, Raspberry Pi
- Adhesive backing for simple installation
- Low power consumption
- Durable and water-resistant surface
- Ideal for DIY and academic projects
Specifications:
| Parameter | Details |
|---|---|
| Type | Matrix Membrane Keypad |
| Keys | 16 (4x4 matrix) |
| Interface | 8-pin ribbon cable |
| Material | Flexible polyester membrane |
| Operating Voltage | 3.3V – 5V |
| Dimensions | ~70mm x 77mm |
| Cable Length | ~85mm |
| Mounting | Adhesive backing |
| Compatibility | Arduino, ESP32, Raspberry Pi |
Use Cases :
- Password-based door lock systems
- Digital code entry panels
- Calculator projects
- Smart home control systems
- Industrial control interfaces
- Student lab projects
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