Numeric Keypad Module (4×4)

The Numeric Keypad Module (4×4) is a versatile and reliable input device designed to be used in various electronic projects and systems. This keypad features a grid of 16 buttons arranged in a 4×4 matrix, allowing users to input numerical data, commands, or control signals easily. Ideal for applications that require a compact and easy-to-use interface, this module is commonly used in embedded systems, security systems, home automation, and more.

Key Features:

• Matrix Configuration: 4×4
• Number of Keys: 16 (0-9, A-D, *, #)
• Keypad Type: Membrane keypad with tactile feedback
• Connection: 8-pin interface
• Operating Voltage: 3.3V to 5V
• Dimensions: Typically around 70mm x 77mm
• Durability: High-quality construction for long-term use

Detailed Overview:

• Compact and Efficient Design: The 4×4 matrix design allows for 16 keys to be connected using only 8 I/O pins on your microcontroller. This efficient use of pins makes it suitable for projects with limited I/O resources.
• Simple Integration: The keypad can be easily integrated into any microcontroller-based system. It is typically connected via an 8-pin interface, which can be directly connected to your microcontroller’s GPIO pins. The keypad’s matrix structure can be easily decoded in software, making it straightforward to detect key presses.
• Versatile Input Options: The 16 keys on the keypad provide a range of inputs, including numbers 0-9, function keys (A-D), and special characters (* and #). This flexibility makes it suitable for a wide range of applications, from simple data entry to complex control systems.
• Tactile Feedback: The membrane keys are designed to provide a tactile response, ensuring that the user knows when a key has been pressed. This feedback is crucial in applications where reliable input is necessary.
• Durable and Reliable: Built with high-quality materials, the Numeric Keypad Module is designed to withstand regular use, making it a reliable choice for both prototype development and finished products.

Applications:

• Embedded Systems: Ideal for use in embedded systems requiring user input, such as calculators, control panels, or user interfaces.
• Security Systems: Commonly used in access control systems, where it can serve as a keypad for entering passcodes.
• Home Automation: Can be integrated into home automation systems for controlling various devices or inputting commands.
• DIY Projects: Perfect for hobbyists and makers who need an input device for their custom electronics projects.

Technical Specifications:

• Operating Voltage: 3.3V to 5V, making it compatible with a wide range of microcontrollers and systems.
• Keypad Matrix: 4×4 matrix configuration allows for easy connection and interfacing.
• Operating Temperature: Typically suitable for standard environments, ensuring stable operation in most indoor settings.
• Pin Configuration: 8 pins (4 rows and 4 columns) for easy integration with microcontroller GPIO pins.

Note: Images are for Illustration Purposes Only

The Numeric Keypad Module (4×4) is an essential component for any project requiring a simple and effective user input interface. Whether you are building a security system, a home automation project, or a custom controller, this keypad offers the functionality and reliability you need.