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Item #:
229789279
4PCS 3x4 Keyboard Module 12 Keys Matrix Keypad External Keypad Board with Pin Header (Welded)
61% of respondents would recommend this to a friend
Item #:
229789279
USD 25
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Order now and get it around Wednesday, September 16
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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
The 4PCS 3x4 keyboard module features a compact design, making it ideal for space-constrained projects while providing easy integration into various electronics and DIY applications.
Easy Connectivity
With a pre-welded pin header, this keypad board allows for effortless connection to microcontrollers, simplifying setup for hobbyists and professionals alike.
Durability
Built from high-quality materials, these keypads are engineered for durability, ensuring long-lasting performance in various environments, thus enhancing reliability for repetitive use.
Product Details
| Compatible Devices | MCU |
| Connectivity Technology | OTHER |
| Additional Features | Lightweight |
| Style Name | 12Key |
| Theme | Number |
| Enclosure Material | Plastic |
| Brand | SazkJere |
| Keyboard Description | Numeric |
| Built-In Media | 4PCS 12key Keyboard Module |
| Manufacturer | SazkJere |
| Number of Items | 4 |
| Mfr Part Number | SJ64CX4-12key |
| Special Feature | Lightweight |
| Style | 12Key |
| Material | Plastic |
| Included Components | 4PCS 12key Keyboard Module |
| Item Weight | 0.04 lbs (20 grams) |
Product Description
4PCS 3x4 Keyboard Module 12 Keys Matrix Keypad External Keypad Board with Pin Header (Welded)
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Customer Questions & Answers
-
Question:
What type of projects can I use this keypad for?
Answer: You can use this keypad for electronic projects like password security systems, automatic gate locks, and generating external interrupts. -
Question:
Is it compatible with all microcontrollers?
Answer: Yes, it is designed for easy communication with any microcontroller. -
Question:
Do I need to weld the pins myself?
Answer: No, the keypad comes with a welded pin header, making it simple to install right out of the package.
SazkJere Access-Control Keypads Editorial Review
The four-pack of 3x4 matrix keypad modules has garnered mixed reviews from customers, highlighting both functionality and significant drawbacks. Users appreciate the overall design's suitability for embedded projects, emphasizing that the welded headers simplify assembly and allow for easy integration with microcontrollers that can manage row and column scanning. However, numerous complaints arise around the lack of documentation included in the package. Many customers noted that while the essential pin mapping information was available online, the absence of a physical reference makes initial setup frustrating and complicates troubleshooting. Additionally, while the Construction is generally functional, users pointed out that the arrangement of the pins could be misleading, as two of them are non-functional, and the right-angle setup takes up more space than necessary. This could deter those without a strong background in electronics, particularly when trying to decode outputs. Although the pricing at $16 for four keypads seems reasonable, customers feel that better alternatives exist in the market that offer clearer documentation and easier integration options, like I2C adapters. Overall, while the product serves its purpose, it may not be the best choice for everyone, particularly those new to working with keypads. **
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Pros
- Simplifies assembly with welded headers.
- Compatible with microcontrollers for easy row and column scanning.
Cons
- Comes with no documentation, leading to setup confusion.
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USD 25
Order now and get it around Wednesday, September 16
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Features & Benefits
- 12-button matrix keyboard module for versatile applications.
- Includes numbers 0-9, * and # for full functionality.
- Easy integration with any microcontroller.
- Compact size: 7*5*1cm and lightweight at 19g.
- No manual welding required; comes with welded pin header.
- Ideal for password systems, external interrupts, and automated gates.
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