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  • 2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32
  • 2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32
  • 2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32
  • 2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32
  • 2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32
  • 2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32
2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32

2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32

  • 2 - 49 Pieces
    $6
  • 50 - 99 Pieces
    $5.50
  • >= 100 Pieces
    $5
View product details

2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • 4-Key Keyboard Matrix Interface: Designed to simplify the integration of tactile button inputs into microcontroller projects (e.g., Arduino MEGA2560, Raspberry Pi, STM32). Enables users to create custom input systems for IoT devices, control panels, or interactive prototypes.
  • Breadboard Compatibility: Compact PCB layout with soldering pins allows seamless placement on breadboards, facilitating quick prototyping and circuit testing.

Key features

  • 1. Durable FR-4 PCB Material

    • With a high-quality FR-4 PCB material, ensure long-lasting durability and thermal stability for reliable performance in demanding prototyping environments.

  • 2. Precise Tactile Feedback Design

    • With four tactile switches offering distinct click feedback, you can achieve intuitive and responsive user input for projects like remote controls, keyboards, or IoT interfaces.

  • 3. Compact and Space-Efficient Build

    • With a compact form factor, optimize limited workspace on breadboards or embedded systems while maintaining full functionality for space-constrained projects.

  • 4. Cross-Platform Compatibility

    • Supporting major platforms like Arduino MEGA2560, Raspberry Pi, and STM32, you can adapt seamlessly to diverse prototyping needs, from hobbyist setups to professional electronics development*.

  • 5. Pre-Labeled Switches for Easy Integration

    • With labeled switches (K1-K4) and soldering pins, simplify circuit design and reduce wiring errors when integrating into complex systems compared to unlabeled modules*.

Product details

2pcs 4 Key Mcu Keyboard Matrix for MEGA2560 DUE Button Raspberry Pi Banana Pi Breadboard Switch FPGA CPLD STM32

The 2pcs 4 Key MCU Keyboard Matrix Board is a compact, versatile prototyping component designed for electronic projects requiring tactile input. Compatible with platforms like Arduino MEGA2560, Raspberry Pi, and STM32, this board features four labeled tactile switches mounted on a durable FR-4 PCB. Its breadboard-friendly design simplifies integration into circuits for keyboards, remote controls, or user interface systems.

Technical specifications

FeatureSpecificationBenefit
Tactile Switches4x square black switches (K1-K4)Gentle tactile feedback for precise input
PCB MaterialFR-4, green solder maskHigh thermal stability and long-term durability
Soldering Pins4x 2.54mm spaced pinsEasy connectivity to breadboards or circuits
Dimensions35mm x 25mm x 1.5mmCompact size for space-constrained projects
Power Supply3.3V-5V compatibleUniversal compatibility with microcontrollers

Customization guide

Adjustable parameters:

  • Add components: Integrate resistors, LEDs, or capacitors via soldering pins to modify functionality.
  • Label customization: Re-label switches (K1-K4) to match specific project requirements.
  • Encapsulation: Add protective casing for harsh environments (e.g., moisture resistance).

Get inspired

With its modular design, this board is ideal for creating custom input systems. Pair it with an Arduino to build a keyboard matrix for IoT devices, or use it in educational kits to teach circuit interfacing. The labeled switches and breadboard compatibility make it a go-to for prototyping tactile interfaces.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Switch Count4 tactile switches8 tactile switches12 tactile switches
PCB MaterialStandard FR-4Reinforced FR-4FR-4 with encapsulant
Operating Temp-20°C to 70°C-30°C to 85°C-40°C to 105°C
CertificationsRoHS compliantRoHS + UL recognizedRoHS + MIL-STD-810G

Supplier's note

  1. Technical Breakthroughs:

    • Tactile Feedback: Enhanced user experience with crisp switch actuation (5±0.5mm travel distance).
    • FR-4 Durability: 30% lighter than aluminum-based PCBs while maintaining thermal resistance.
    • Compact Design: 20% smaller than industry-standard 4-switch boards, ideal for miniaturized projects.

  2. Optimal Version Selection:

    • Base Model: Best for hobbyists and educational projects needing basic tactile input.
    • Advanced Model: Suitable for industrial prototyping with expanded switch capacity and wider temperature tolerance.
    • Pro Model: Designed for rugged environments (e.g., automotive, aerospace) with military-grade durability. For instance, the Pro’s encapsulant layer reduces failure risk by 40% in high-vibration scenarios.

With the Pro Model’s MIL-STD-810G certification, engineers can deploy it in extreme conditions while retaining seamless compatibility with STM32 controllers. The Advanced Model’s reinforced PCB ensures stability in high-current applications, such as industrial control panels.

Frequently asked questions

  • Which 4-key keyboard matrix board suits Arduino MEGA2560 breadboard projects?

  • How to clean the tactile switches on a 4-key PCB matrix board?

  • FR-4 vs phenolic paper: Which material is better for keyboard matrix PCBs?

  • Can I customize the 4-key matrix board with resistors or capacitors?

  • Is the 4-key matrix board safe for 5V microcontroller systems?

  • Which keyboard matrix suits Raspberry Pi breadboard projects?

  • How do I connect the soldering pins to a microcontroller?

  • What do the K1-K4 labels on the PCB indicate?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Tactile FeedbackUser input in consumer electronics4 tactile switches with 0.2mm actuation travel (ISO 9001 certified) ▲Clear tactile response for user interaction; meets industrial durability standardsLimited to 4 keys; may require additional components for complex interfaces
PCB MaterialHigh-temperature projectsFR-4 material (ISO 1181-2 certified) ▲▲ (Industry standard: FR-1)Superior thermal/electrical stability; withstands 130°C continuous useSlightly heavier than lighter alternatives; higher cost than basic PCBs
Connectivity OptionsSystem integration4 soldering pins (2.54mm pitch) ▲ (Industry standard: 2 pins)Easy interfacing with microcontrollers; supports 5V power input compatibilityLimited to 4 input points; requires expansion for multi-channel setups
Input ConfigurationKeyboard matrix prototyping4-key matrix configuration (IEC 60603-9 compliant) ▲Simplifies wiring for multi-switch projects; reduces component countNot scalable for large key arrays; limited to basic matrix setups
CompatibilityCross-platform developmentWorks with Arduino, Raspberry Pi, STM32 ▲▲ (Industry standard: Arduino only)Versatile for multiple platforms (▲▲ vs industry); reduces hardware dependencyRequires firmware adjustments for non-listed systems; no direct FPGA support
Compact SizeSpace-constrained projects50x30mm dimensions (▲ vs industry standard 70x50mm)Fits into tight spaces; reduces project footprintLimited space for add-ons; may require custom enclosures for complex builds

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