ALLNET 4duino Keypad (ALL-4duino-Tastenfeld) - 4x4 Matrix Keypad for Arduino, Raspberry Pi, ESP32

The ALLNET 4duino Tastenfeld (ALL-4duino-Tastenfeld) is a 4x4 matrix membrane keypad designed for easy integration with Arduino, Raspberry Pi, ESP32, and other microcontrollers. It features 16 tactile keys with clear legends (0-9, A-D, *, #) and connects via an 8-pin header. This keypad is ideal for user input, data entry, menu navigation, and control systems in DIY electronics and prototyping projects.

Advantages

Easy to interface with any microcontroller using digital I/O pins. Compact and durable membrane switch design with tactile feedback. Clear white legends on black keys for easy readability. Low power consumption (3.3V-5V).

Suitable for

• Arduino and Raspberry Pi projects
• ESP32 and other microcontroller-based systems
• User input and data entry applications
• Menu navigation and control panels
• DIY electronics and prototyping

Key specifications

• Keypad Type: Matrix Keypad
• Key Layout: 4x4
• Number of Keys: 16
• Key Legends: 1, 2, 3, A, 4, 5, 6, B, 7, 8, 9, C, *, 0, #, D
• Interface: 8-pin header (4 rows, 4 columns)
• Pin Configuration: R1, R2, R3, R4 (Rows); C1, C2, C3, C4 (Columns)
• Compatibility: Arduino, Raspberry Pi, ESP32, Microcontrollers
• Key Technology: Membrane Switch
• Key Feedback: Tactile
• Operating Voltage: 3.3V - 5V DC (via microcontroller I/O)
• Connector Type: Male Header Pins
• Mounting: Through-hole pins
• Material: PCB, Plastic Keys
• Key Color: Black
• Legend Color: White

Recommendations

For best results, use with a microcontroller that supports digital input/output. Connect the row and column pins to separate digital pins and use a library for matrix scanning. Ensure operating voltage is within 3.3V-5V.