- Home Page /
- Electronics /
- Security & Surveillance /
- Accessories /
- Access-Control Keypads /
- 2PCS 3x4 Matrix Keypad 12 Keyboard Module Ext...
0 ratings
Item #:
137763184
2PCS 3x4 Matrix Keypad 12 Keyboard Module External Keypad Board for Microcontroller (3x4 Key)
Item #:
137763184
ZMW 430
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Only 11 items left in stock.
Order now and get it around Wednesday, July 01
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
The keyboard matrix allows you to quickly add controls to your electronic projects.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Compact Design
The 3x4 matrix layout allows for efficient space usage, making it ideal for compact projects and devices without sacrificing functionality.
Easy Integration
Designed for seamless interaction with microcontrollers, this keypad simplifies the process of user input in embedded applications and DIY electronics projects.
Durable Quality
Built to withstand extensive use, this keypad module offers long-lasting performance, ensuring reliable operation in various applications from home automation to gaming consoles.
Product Details
- It provides numbers from 0 to 9, 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 |
| Hand Orientation | Ambidextrous |
| Compatible Operating System Family | Windows |
| Number of Keys | 12 |
| Style Name | 12Key |
| Theme | Number |
| Enclosure Material | Plastic |
| Brand | SazkJere |
| Keyboard Description | Number Pad |
| Antenna Location | Office |
| Built-In Media | 2PCS Matrix Keypad |
| Model Number | 3x4 key |
| Unit Count | 2.0 Count |
| Manufacturer | SazkJere |
| Mfr Part Number | SJ64X4 |
| Recommended Uses For Product | Office |
| Special Feature | Lightweight |
| Style | 12Key |
| Material | Plastic |
| Included Components | 2PCS Matrix Keypad |
| Item Weight | 0.1 lbs (50 grams) |
What's in the box
2PCS Matrix Keypad
Who Should Buy?
-
Hobbyist Programmers
Ideal for DIY electronics projects, enabling hobbyists to create custom interfaces for their microcontrollers.
-
Educational Purposes
Great for teaching electronics and programming, providing hands-on experience with input devices in projects.
-
Embedded Systems
Perfect for embedded system developers needing compact and efficient input methods for various applications.
-
Professional Developers
May lack advanced features and robustness expected in professional-grade input devices for serious applications.
-
High-Volume Production
Not suited for high-volume products, as the keypad may not meet durability and quality standards for mass production.
-
Mobile Applications
Less portable and not ideal for mobile use due to its board structure, unsuitable for pocket-sized projects.
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 3x4 key Editorial Review
The 2PCS 3x4 Matrix Keypad has garnered a mixed reception from customers, reflecting a blend of practical usability and some underlying issues. While many users praised the build quality, responsiveness, and ease of integration into microcontroller projects, there were notable criticisms regarding the Consistency of their performance. Some users reported high contact resistance, which affected their ability to register key presses effectively. Despite these concerns, several customers found the keypads to be sturdy and well-Constructed, suitable for a variety of DIY projects and experimentation. They appreciated the clear labeling of buttons and the straightforward wiring process, which allowed for seamless incorporation into their designs without demanding excessive GPIO resources. Moreover, many have noted that ample resources and tutorials online can help guide users through the setup process, mitigating the need for detailed documentation with the product. The keypads have been particularly highlighted for their cost-effectiveness, providing value for users engaged in prototyping or those who want an extra keypad on hand. In summary, while the 2PCS 3x4 Matrix Keypad offers solid Construction and responsiveness for various applications, potential buyers should be aware of some variability in performance concerning the key presses and contact resistance. **
Customer Reviews & Ratings
8 customers ratings
-
5 Star
22%
-
4 Star
11%
-
3 Star
16%
-
2 Star
0%
-
1 Star
51%
Review this product
Share your thoughts with other customers
Pros
- Sturdy and well-built design
- Responsive keypresses
- Easy wiring with minimal GPIO usage
- Cost-effective, especially as a two-pack
- Adequate for a variety of DIY projects
Cons
- High contact resistance reported by some users
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
ZMW 430
Order now and get it around Wednesday, July 01
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 11 items left in stock.
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Fastest cross-border delivery
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.