The 4×4 Matrix Keypad Keyboard Module features 16 tactile membrane keys arranged in a 4-row by 4-column matrix. The keypad uses matrix scanning technology, allowing all 16 buttons to be read using only 8 interface pins, which helps save valuable GPIO pins on your microcontroller.
This lightweight and durable keypad is commonly used in security systems, electronic door locks, calculators, menu-driven interfaces, and robotics projects. The flexible ribbon cable makes it easy to connect directly to Arduino, ESP32, ESP8266, Raspberry Pi, STM32, AVR, PIC, and other development boards.
With responsive key feedback and a compact design, the 4×4 Matrix Keypad is an excellent choice for both beginners and professional electronics developers.
Technical Specifications
|
Specification |
Details |
|---|---|
|
Keypad Layout |
4 × 4 Matrix |
|
Total Buttons |
16 |
|
Interface |
8-pin matrix output |
|
Operating Voltage |
3.3V – 5V |
|
Switch Type |
Membrane tactile switch |
|
Connection Type |
Flexible ribbon cable |
|
Dimensions |
Approximately 69 × 77 mm |
|
Weight |
Lightweight |
|
Operating Temperature |
-20°C to +70°C |
Applications
-
Password entry systems
-
Electronic door locks
-
Access control systems
-
Menu navigation interfaces
-
Calculator projects
-
Robotics control panels
-
Home automation systems
-
Arduino learning projects
-
IoT and embedded systems
-
Educational electronics experiments
Package Includes
1 × 4×4 Matrix Keypad Keyboard Module (16-Button)
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