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Item #:
138697340
2PCS 4x4 Matrix Keypad 16 Keyboard Module External Keypad Board for Microcontroller (4x4 Key)
Item #:
138697340
NGN 30939
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
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Imported from USA store
QTY:
Only 5 items left in stock.
Order now and get it around Saturday, July 11
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The keyboard matrix allows you to quickly add controls to your electronic projects.
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What Stands Out
Compact Design
Space-saving 4x4 matrix layout allows easy integration into various projects, making it ideal for DIY and professional applications.
Versatile Compatibility
Designed to be compatible with multiple microcontrollers, this keypad module enhances its usability across different platforms and projects.
Reliable Performance
Utilizes high-quality materials for consistent performance, ensuring durability and responsiveness during long-term use in diverse environments.
Product Details
- It provides numbers from 0 to 9, and A B C D, as well as standard stars (*) and hash symbols (#)
- Keypad is a combination of row and column circuits.
- The keyboard matrix allows you to quickly add controls to your electronic projects. Easy to communicate with any microcontroller.
- There is a switch connecting each row and column. So the combinations of rows and columns makes up the 16 inputs.
- Application: Password security system, Generating external interrupt, Automatic Gate Keypad Lock.
| Compatible Devices | PC |
| Connectivity Technology | USB-A |
| Additional Features | Lightweight |
| Power Source | USB Powered |
| Keyboard Layout | QWERTY |
| Hand Orientation | Ambidextrous |
| Compatible Operating System Family | Windows |
| Number of Keys | 16 |
| Style Name | 16Key |
| Theme | Number |
| Enclosure Material | Plastic |
| Brand | SazkJere |
| Keyboard Description | Numeric |
| Built-In Media | 2PCS Matrix Keypad |
| Model Number | 4x4 key |
| Unit Count | 2.0 Count |
| Manufacturer | SazkJere |
| Mfr Part Number | SJ64X4 |
| Special Feature | Lightweight |
| Style | 16Key |
| Material | Plastic |
| Included Components | 2PCS Matrix Keypad |
| Item Weight | 0.5 lbs (230 grams) |
What's in the box
2PCS Matrix Keypad
Who Should Buy?
-
Hobbyist Programmers
Ideal for hobbyists creating interactive prototypes or projects that require user input via a keypad interface.
-
Educational Purposes
Great for students learning about microcontrollers and basic electronics, providing hands-on experience with input devices.
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DIY Electronics Projects
Perfect for DIY enthusiasts building custom devices like alarm systems or robotic controls that need numeric input.
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Professional Applications
Not suitable for high-reliability applications where robust input devices are required in industrial settings.
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Large Scale Production
Less ideal for mass production projects due to potential variability in module qualities and untested integration.
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Mobile Device Integration
Not recommended for mobile devices where compactness and touch interfaces are more practical and user-friendly.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a 4x4 matrix keypad?
Answer: A 4x4 matrix keypad is a type of input device that consists of a grid of 16 buttons arranged in a 4x4 layout. It enables users to enter data into a microcontroller or other electronic systems. Each button press is translated into a unique signal, allowing for manual input of numbers, letters, or commands. This versatility makes it ideal for projects such as electronic locks, programmable remote controls, or DIY calculators, where simplicity and functionality are key. -
Question:
How do I connect the 4x4 matrix keypad to my microcontroller?
Answer: Connecting a 4x4 matrix keypad to a microcontroller is straightforward. You'll need to connect the rows and columns of the keypad to the digital input pins of your microcontroller. The usual approach involves using 8 pins on your microcontroller, where 4 are for rows and 4 are for columns. Once connected, you can use libraries such as Keypad for Arduino to easily read the inputs. This setup is commonly used in Arduino projects, enhancing interactivity in custom applications. -
Question:
What types of projects can benefit from using a 4x4 matrix keypad?
Answer: A 4x4 matrix keypad is invaluable in various projects, especially in automation and control systems. It's widely used in security systems to input door codes, in home automation projects to control lights or devices, and in educational kits to teach programming and electronics. Additionally, hobbyists often incorporate these keypads into devices like vending machines or game controllers, providing a tactile interface for user interaction. -
Question:
Can the 4x4 matrix keypad be used with Raspberry Pi?
Answer: Yes, the 4x4 matrix keypad can be used with Raspberry Pi, making it a great choice for hobbyists and developers alike. You will need to connect the keypad to the GPIO pins, using Python libraries like RPi.GPIO or gpiozero to read the key presses. This combination allows for the development of user-friendly interfaces for various applications such as home automation, robotics, or interactive displays, enhancing both functionality and user engagement. -
Question:
Is a pull-up resistor required for the 4x4 matrix keypad?
Answer: Typically, using pull-up resistors with a 4x4 matrix keypad is recommended but not mandatory. Pull-up resistors help ensure that the signals from the buttons are stable, especially when no key is pressed. If your microcontroller's GPIO pins have internal pull-ups, you can activate them in your code, allowing for simpler wiring. This practice is particularly beneficial in reducing false readings and improving reliability in applications where consistent performance is critical. -
Question:
What materials are included in the 2PCS 4x4 matrix keypad package?
Answer: The 2PCS 4x4 matrix keypad package typically includes two identical 4x4 keypad modules, which are pre-wired for easy connection. These modules are constructed from durable materials, ensuring longevity and consistent performance in various applications. This dual-package is beneficial for projects requiring multiple keypads or for prototyping, where you can have spare parts on hand. It’s also an economical choice for developers who want to experiment with different configurations. -
Question:
Do I need any additional components to use the keypad?
Answer: While the 4x4 matrix keypad can function on its own when connected properly, additional components may enhance its effectiveness. Common additions include pull-up resistors for signal integrity, LED indicators for visual feedback, or breadboards for easier prototyping. Depending on your project, you might also need jumper wires for connections. These components can expand the keypad functionality, allowing for richer project designs in automation or control systems. -
Question:
What programming languages can be used with the 4x4 matrix keypad?
Answer: Several programming languages can be employed with a 4x4 matrix keypad depending on the platform. For Arduino, C/C++ is commonly used with libraries designed for handling inputs from the keypad. On Raspberry Pi, Python is the prevalent language, allowing for quick development and testing. Both approaches facilitate integration into various projects like home automation, DIY games, or educational systems, making the keypad a versatile choice for programmers of all levels. -
Question:
Where can I buy 2PCS 4x4 Matrix Keypad 16 Keyboard Module External Keypad Board for Microcontroller 4x4 Key?
Answer: You can purchase the 2PCS 4x4 Matrix Keypad 16 Keyboard Module from Ubuy, which offers a wide selection of electronic components and accessories. Ubuy provides a convenient platform for finding quality products specifically designed for microcontroller interfacing. With detailed product descriptions and user reviews, Ubuy ensures you make an informed decision while shopping online, making it easy to enhance your electronics projects. -
Question:
Can the keypad be used in embedded systems?
Answer: Absolutely, the 4x4 matrix keypad is commonly used in embedded systems due to its compact size and straightforward interfacing. It acts as an input device in systems like automated vending machines, home appliances, or portable medical devices. When programmed with a microcontroller, it enables user interaction, allowing for menu navigation, numerical input, and command selection. This versatility makes it a preferred choice in many embedded applications across various industries.
SazkJere Access-Control Keypads 4x4 key Editorial Review
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NGN 30939
Order now and get it around Saturday, July 11
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 5 items left in stock.
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Features & Benefits
- Compact 4x3 design with 12 keys for versatile input.
- Includes numbers 0-9, star (*), and hash (#) keys.
- Lightweight at just 19g, perfect for portable projects.
- Easy integration with any microcontroller.
- Perfect for applications like password security and automatic gate locks.
- Includes two keypads for extra value and functionality.
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