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227431720
4PCS 3x4 Matrix Keypad 12 Keyboard Module External Keypad Board for Microcontroller (12Key)
商品＃:
227431720
TWD 816
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*All items will import from 美國
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立即訂購並活動它 Monday, 七月 27
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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
This 4PCS keypad module offers a compact design, ideal for space-constrained applications, making it perfect for DIY electronics projects or embedded systems.
Easy Integration
Designed for seamless integration with microcontrollers, the 3x4 matrix layout simplifies connection and programming, saving time for developers and hobbyists.
Durability
Built with quality components, this keypad ensures durability and reliability, providing long-lasting performance for various applications, from robotics to home automation.
產品詳情
| Compatible Devices | Microcontroller-compatible devices |
| Connectivity Technology | PS/2 |
| Power Source | Wired |
| Switch Type | Mechanical |
| Keyboard Layout | QWERTY |
| Hand Orientation | Ambidextrous |
| Button Quantity | 12 |
| Number of Keys | 12 |
| Number of Sections | 1 |
| Style Name | 12Key |
| Theme | Number |
| Brand | SazkJere |
| Keyboard Description | Numeric |
| Built-In Media | 4PCS External Keypad Board |
| Model Number | SJ64X4 |
| Unit Count | 4.0 Count |
| Manufacturer | SazkJere |
| Mfr Part Number | SJ64X4 |
| Enclosure Material | Plastic |
| Style | 12Key |
| Material | Plastic |
| Included Components | 4PCS External Keypad Board |
| Item Weight | 0.2 lbs (90 grams) |
Who Should Buy?
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Electronics Hobbyists
Ideal for DIY projects where users need an external keypad for various electronic applications and microcontroller interfaces.
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Educational Purposes
A great tool for students learning about microcontrollers, keypads, and circuit design in electronics courses.
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Robotics Projects
Useful in robotics applications for user inputs, allowing control of various functions through keyboard commands.
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Professional Applications
Not suitable for high-end professional systems requiring robust, reliable input methods with extensive functionality.
產品描述
4PCS 3x4 Matrix Keypad 12 Keyboard Module External Keypad Board for Microcontroller (12Key)
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客戶問答
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問題:
What is a 3x4 Matrix Keypad and how does it work?
Answer: A 3x4 Matrix Keypad is an electronic component consisting of a grid of keys arranged in three rows and four columns, totaling 12 keys. Each key press is detected via a combination of row and column contacts that are connected to a microcontroller, facilitating user input for various applications. This setup allows for efficient scanning and minimizes the number of input pins needed for operation. Typical use cases include numeric inputs for devices like alarm systems, access control, or DIY electronics projects where a compact keypad interface is required. -
問題:
Can I use the 3x4 Matrix Keypad with different microcontrollers?
Answer: Yes, the 3x4 Matrix Keypad is compatible with a variety of microcontrollers, including popular ones like Arduino, Raspberry Pi, and PIC. The wiring typically involves connecting row and column pins of the keypad to the GPIO pins of the microcontroller. Given its adaptability, this keypad can be utilized in projects ranging from home automation systems to robotics, allowing users to create custom interfaces for various applications. -
問題:
What types of projects can the 3x4 Matrix Keypad be used for?
Answer: The 3x4 Matrix Keypad is versatile and can be employed in numerous electronics projects, such as alarm systems, code entry systems, remote controls, or as a user interface for embedded devices. By providing a straightforward way to input numbers or commands, hobbyists often incorporate it into Arduino-based projects or as a control panel for custom electronic designs, enhancing user interaction. -
問題:
How do I wire the 3x4 Matrix Keypad to my microcontroller?
Answer: Wiring the 3x4 Matrix Keypad involves connecting its 7 pins to the GPIO pins of your microcontroller. Typically, the keypad has 3 pins for rows and 4 pins for columns. You can designate any 7 digital pins on your microcontroller for this purpose. After connecting, programming libraries such as Keypad for Arduino can simplify the process of detecting key presses. This method ensures that your electronic project remains efficient while involving minimal wiring complexity. -
問題:
What features should I look for in a keypad module?
Answer: When selecting a keypad module, consider factors like key responsiveness, durability, size, and ease of integration with your existing components. A quality 3x4 Matrix Keypad will typically offer tactile feedback for each key press, ensuring a satisfying user experience. Moreover, compatibility with various microcontrollers and the availability of accompanying libraries can ease the development process for any electronic project you undertake. -
問題:
Is the 3x4 Matrix Keypad suitable for commercial applications?
Answer: Yes, the 3x4 Matrix Keypad can be suitable for commercial applications, particularly in products requiring numeric input, like point-of-sale terminals, appliance controls, or industrial equipment interfaces. Its compact size and simplicity make it a cost-effective solution for integrating user inputs into various electronic systems, thus enhancing product functionality in commercial settings. -
問題:
How durable is the 3x4 Matrix Keypad?
Answer: The durability of a 3x4 Matrix Keypad largely depends on its design and construction materials. Good quality keypads typically feature robust key switches and a well-designed substrate, allowing them to withstand frequent use. When used in applications that demand high reliability, such as security systems or user interfaces, selecting a keypad with proven durability is essential for maintaining operational integrity over time. -
問題:
Can I customize the key layout on my keypad?
Answer: Yes, you can customize the key layout on a 3x4 Matrix Keypad during programming. By modifying the code used to read inputs, you can assign different functions or outputs to each key according to the requirements of your project. For instance, you might want to create a custom command sequence for a home automation system, allowing users to control lights or appliances easily. This flexibility makes it an ideal choice for tailored electronic projects. -
問題:
Is it beginner-friendly to work with the 3x4 Matrix Keypad?
Answer: Absolutely! The 3x4 Matrix Keypad is designed for ease of use, making it suitable for beginners and seasoned developers alike. With tutorials readily available and libraries like the Keypad library for Arduino simplifying the coding process, newcomers can quickly learn to integrate this keypad into their projects. Whether you're creating your first electronic device or experimenting with more complex systems, it serves as a great introduction to keypad functionalities. -
問題:
Where can I buy the 4PCS 3x4 Matrix Keypad 12 Keyboard Module for Microcontroller in Taiwan?
Answer: You can purchase the 4PCS 3x4 Matrix Keypad 12 Keyboard Module for Microcontroller on Ubuy, a reliable online platform that offers a wide selection of electronic components and modules. Ubuy provides access to international shipping options, ensuring that you receive your keypads efficiently. Their user-friendly interface allows you to easily locate and order your required components for your projects.
SazkJere Access-Control Keypads SJ64X4 Editorial Review
**Editorial Review** The 4PCS 3x4 Matrix Keypad has garnered a significant amount of criticism from users primarily focused on its Construction and functionality. While some users acknowledge the adequate quality of the keypad in terms of mechanics and electrical design, a recurring theme in the feedback is the incorrect pinout provided with the product. This discrepancy has led to frustrations, particularly for those integrating the keypad into existing Arduino designs, necessitating rewiring efforts that complicate the setup process. A central issue that many customers encountered pertains to the button functionality. Multiple users reported that the keys failed to provide continuity, attributing this issue to a film covering the contact pads that prevented proper connection. Although a few users managed to salvage their experience by cleaning the pads, they noted that this resulted in unreliable performance rather than a Consistent response. Worse still, the printed circuit board's Construction was heavily criticized. Users highlighted that the copper traces were prone to breaking during soldering, indicating poor quality control during manufacturing. This defect made it exceedingly challenging for users to create reliable connections without damaging the board itself. Overall, the feedback paints a picture of a product that suffers from mechanical and functional inadequacies, making it difficult for users to recommend it for reliable applications in their projects. **
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優點
- Adequate mechanical and electrical quality perceived by some users.
缺點
- Incorrect pinout provided with the product.
Platform Trust & Buyer Confidence
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Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
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“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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立即訂購並活動它 Monday, 七月 27
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特色和優勢
- 12-button keypad with numbers 0-9, *, and #.
- Compact size of 7*5*1 cm and lightweight at 19g.
- Easy integration with any microcontroller for seamless connectivity.
- Ideal for applications like password security systems and gate lock keypads.
- 3x4 matrix design for efficient input management.
- Includes 4 keypads for multiple project uses.
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