4x4 Matrix Keypad Membrane Switch – 16-Button Keyboard
The 4 x 4 Matrix Keypad Module is a non-encoded matrix keypad consisting of 16 keys in parallel. The keys of each row and column are connected through the pins outside – pin R1-R4 as labeled beside control the rows, when L1-L4, the columns. A 4×4 matrix keypad consisting of microswitch buttons. 4x4 Matrix Keypad Module with 16 tactile push buttons, ideal for Arduino, Raspberry Pi, microcontrollers, and DIY electronics projects requiring numeric or alphanumeric input.
₹ 39
₹ 59
| : | |
| Made In : | India |
The 4x4 Matrix Keypad Membrane Switch is a compact and reliable input device widely used in embedded systems and microcontroller-based projects. It features 16 tactile buttons arranged in a 4x4 grid, allowing users to input numbers, characters, or commands easily. This keypad is ideal for applications like password entry systems, calculators, security locks, and menu-driven interfaces. Its membrane design ensures durability, lightweight construction, and easy integration with platforms like Arduino, ESP32, and Raspberry Pi.
Key Features
- 16-button (4x4) matrix keypad layout
- Thin, flexible membrane design
- Easy interface using row-column scanning method
- Adhesive backing for simple mounting
- Low power consumption
- Compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers
- Durable and cost-effective input solution
Technical Specifications
| Parameter | Specification |
|---|---|
| Number of Keys | 16 (4x4 Matrix) |
| Interface Type | 8-pin (Row & Column) |
| Operating Voltage | 3.3V – 5V |
| Material | Membrane (Flexible Plastic) |
| Connector Type | Female Berg Connector |
| Dimensions | Approx. 70mm × 77mm |
| Cable Length | ~85mm |
| Mounting Type | Adhesive Backing |
How to Use
- Connect the 8 pins of the keypad to digital I/O pins of your microcontroller
- Use a keypad library (e.g., Keypad.h in Arduino IDE)
- Configure row and column pins in code
- Detect key presses via scanning method
- Use input for controlling menus, passwords, or devices
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