4×5 Matrix keypad

The 4×5 Matrix Keypad is a high-quality keypad with 20 keys arranged in a 4×5 matrix. This keypad is designed for a variety of applications including embedded systems, microcontroller projects, and digital circuits. It offers a simple interface for user input and is widely used in applications such as security systems, DIY electronics, and interactive projects.

Key Features:

• 20 keys arranged in a 4×5 matrix
• Durable and reliable design
• Easy to integrate with microcontrollers and other digital circuits
• Compact and lightweight

Technical Specifications:

• Keypad Layout: 4 rows and 5 columns
• Operating Voltage: 3.3V to 5V
• Dimensions: 75mm x 100mm
• Cable Length: 100mm
• Connector Type: Pin header (10 pins)

Applications:

• Embedded systems
• Microcontroller projects
• Digital input devices
• Security systems
• DIY electronics
• Interactive projects

Usage:

1. Connect the Keypad: Connect the row and column pins of the keypad to the digital I/O pins of the microcontroller.
2. Initialize the Pins: Set up the microcontroller pins as input or output as needed.
3. Scanning the Keypad: Implement a scanning routine to detect key presses by checking the state of each row and column.
4. Read Key Presses: Identify which key is pressed based on the row and column detected during scanning.
5. Use in Application: Use the detected key press for the desired function in your application, such as entering a password or navigating a menu.

Caution:

• Ensure proper connections to avoid short circuits.
• Handle the keypad with care to avoid damaging the keys.