Looking for Keyboard? 2 x 2 Matrix 4 Push Button Keyboard Module is available at Zbotic with fast shipping across India.
PRODUCT DESCRIPTION
The 2×2 Matrix Keypad Module is commonly used as an input device in various projects. It features a compact layout with 4 keys, providing a simple method for entering data. The module operates as a non-encoded matrix keypad, with 14 keys connected in parallel. The rows and columns are controlled via external pins—R1 and R2 control the rows, while L1 and L2 control the columns.
This module uses microswitch buttons for reliable input, and it includes four 3mm (M3) mounting holes for easy installation. Pin designations are clearly labeled on the PCB for straightforward connection. The module’s pinout is arranged such that two pins function as the ‘x’ coordinates and the other two as the ‘y’ coordinates. It comes with pre-soldered pin headers that are rotated 90 degrees for convenient integration into your project.
How it Works:
To test if a key is pressed on the 2×2 matrix keypad, follow these steps:
1. Power the Rows: Begin by setting the rows (R1 and R2) to a high level (High).
2. Set Rows Low: Then, sequentially set each row (R1, R2) to a low level (Low) one at a time.
3. Check Columns: While each row is low, check the status of the columns (L1, L2).
– If any column reads low, it indicates that a key is being pressed, and the key belongs to the corresponding column.
– If all columns read high, no key is pressed.
4. Identify the Row: Once the column with the pressed key is identified, set the rows to low one by one to determine which row corresponds to the pressed key. Other rows will remain high during this process.
5. Pinpoint the Key: Once the correct row is identified, check the status of the columns again. The column that is low at the intersection of the identified row is the key that has been pressed.
By following this process, you can accurately detect which key is pressed on the matrix keypad.
Features:
- 2×2 matrix keypad module with 4 buttons
- Small in size and hence Save space
- More convenient to use
- Expanded development application modules for single chip
- With 4 keys and 4 pins.
Package Includes:
1 x 2*2 Matrix Keypad Module
About Keyboard
2 x 2 Matrix 4 Push Button Keyboard Module is available at Zbotic, India’s trusted electronics and robotics store. Manufactured by Generic, this product is designed for hobbyists, students, and professionals working on electronics, robotics, and DIY projects.
Product Details
- Brand: Generic
- SKU: AI3437
- Category: Electronic Switches/Keypads Modules
Why Buy from Zbotic?
Zbotic offers a wide range of electronics components, development boards, sensors, and robotics parts. All products are quality-checked and shipped within 24 hours. Free shipping on qualifying orders. We offer COD (Cash on Delivery) and secure online payment options. Our customer support team is available to help with technical queries about Keyboard and other products.
Applications
Keyboard can be used in a variety of projects including Arduino projects, Raspberry Pi builds, drone assembly, 3D printing, IoT applications, and educational experiments. Whether you are a beginner or an advanced user, this component provides the reliability and performance you need. Order your Keyboard today and start building.
About Keyboard
2 x 2 Matrix 4 Push Button Keyboard Module is available at Zbotic, India’s trusted electronics and robotics store. Manufactured by Generic, this product is designed for hobbyists, students, and professionals working on electronics, robotics, and DIY projects.
Product Details
- Brand: Generic
- SKU: AI3437
- Category: Electronic Switches/Keypads Modules
Why Buy from Zbotic?
Zbotic offers a wide range of electronics components, development boards, sensors, and robotics parts. All products are quality-checked and shipped within 24 hours. Free shipping on qualifying orders. We offer COD (Cash on Delivery) and secure online payment options. Our customer support team is available to help with technical queries about Keyboard and other products.
Applications
Keyboard can be used in a variety of projects including Arduino projects, Raspberry Pi builds, drone assembly, 3D printing, IoT applications, and educational experiments. Whether you are a beginner or an advanced user, this component provides the reliability and performance you need. Order your Keyboard today and start building.
2 x 2 Matrix 4 Push Button Keyboard Module Overview
The 2 x 2 Matrix 4 Push Button Keyboard Module is a compact PCB-mounted keypad featuring four microswitch buttons arranged in a 2×2 matrix. It serves as a simple input device for microcontroller projects, allowing developers to detect key presses through row-and-column scanning.
Key Features of 2 x 2 Matrix 4 Push Button Keyboard Module
- Compact 2×2 matrix layout with four industrial microswitch buttons
- Space-saving PCB design ideal for tight enclosures
- Non-encoded matrix operation via R1/R2 (rows) and L1/L2 (columns) pins
- Four 3 mm (M3) mounting holes for secure fixing
- Clearly labeled pinout for straightforward wiring to microcontrollers
- Genuine product with fast shipping across India from Zbotic
Applications and Use Cases
- DIY electronics and prototyping requiring basic user input
- Menu navigation on embedded systems and displays
- Control interface for simple robots or automation units
- Access code entry panels in security or lock systems
- Educational kits demonstrating matrix scanning techniques
How to Use 2 x 2 Matrix 4 Push Button Keyboard Module
Mount the module using the four M3 holes, then wire the R1 and R2 pins as row outputs and the L1 and L2 pins as column inputs on your microcontroller. Implement a scanning routine by driving one row low at a time and reading the column lines to detect a pressed key. Software libraries for Arduino, Raspberry Pi, or other controllers can simplify this process.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Which microcontrollers can interface with this 2×2 keypad?
The module works with any microcontroller or development board that has at least four digital I/O pins, including Arduino, ESP32, STM32, and Raspberry Pi (via GPIO). Simply assign two pins for rows and two for columns.
Is any additional hardware required for key scanning?
No specialized hardware is needed. You only need standard jumper wires and pull-up or pull-down resistors (most platforms provide internal pull-ups). Connect the rows as outputs and columns as inputs in your code.
Does the module include connecting wires or headers?
This product ships as the bare PCB keypad module. You will need to provide your own wires, header pins, or a connector to interface with your controller.
Technical Specifications
| Package Quantity | 2 pcs |
|---|---|
| SKU | AI3437 |
| Weight | 0.0039 kg |
| Availability | In Stock |
Applications & Use Cases
The 2 x 2 Matrix 4 Push Button Keyboard Module is a versatile electronic switches/keypads modules used across a wide range of applications including electronics projects, DIY builds, prototyping, and educational experiments.
Common use cases:
- Integrating into a custom electronics project
- Learning and experimenting with circuits
- Replacing or upgrading components in existing setups
This product is ideal for electronics enthusiasts, engineers, and students.
Technical Tip: Always verify voltage and current requirements before connecting to your circuit. Check datasheets for detailed specifications and pin configurations.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
