JOY-IT ButtonMatrix4x4 4x4 matriisinäppäimistömoduuli 16 painikkeella Arduino, Raspberry Pi, ESP32

Expand your microcontroller projects with a robust 16-key input solution. The JOY-IT ButtonMatrix4x4 delivers a 4x4 matrix keypad on a compact FR4 PCB, offering 16 momentary push buttons in a space-saving layout. With only 8 interface pins (4 rows, 4 columns), it conserves GPIO resources while providing ample user input for menus, keypads, and control panels.

Overview

This module is a passive 4x4 matrix keypad, meaning it draws negligible current and requires no external power. It operates seamlessly with 3.3V and 5V logic, making it compatible with a wide range of development boards including Arduino, Raspberry Pi, ESP32, and STM32. The male pin header allows direct breadboard insertion or soldering for permanent installations. The black keypad sits on a green PCB, providing clear visual contrast for key identification.

What stands out

• 4x4 matrix configuration with 16 momentary push buttons
• Only 8 interface pins (4 row, 4 column) for efficient GPIO usage
• Compatible with 3.3V and 5V logic levels
• Passive design – no power consumption
• Breadboard-friendly male pin header
• Durable FR4 PCB material

Technical details

• Keypad type: Matrix keypad
• Matrix configuration: 4x4
• Number of keys: 16
• Key type: Momentary push button
• Interface pins: 8 (4 row, 4 column)
• Connection interface: Male pin header
• Logic voltage compatibility: 3.3V - 5V DC
• Recommended use: Microcontroller input, DIY projects
• Compatible platforms: Arduino, Raspberry Pi, ESP32, STM32
• PCB material: FR4
• Keypad colour: Black
• PCB colour: Green
• Current draw: Passive (negligible)
• Module function: User input control
• Mounting: Breadboard compatible / solderable
• Included components: 4x4 keypad, interface PCB

Our verdict

The JOY-IT ButtonMatrix4x4 is a reliable and versatile input module for any microcontroller enthusiast. Its straightforward matrix design and broad compatibility make it an essential building block for custom control interfaces, security keypads, and interactive projects. The included interface PCB simplifies wiring, and the passive nature ensures it won't drain your power budget.