Description
The 8×8 LED Dot Matrix Display 42mm × 42mm is a simple and versatile LED display module featuring 64 individual LEDs arranged in an 8×8 matrix. It can be controlled row-by-row and column-by-column to create letters, numbers, symbols, patterns, and basic animations.
This LED dot matrix is a useful choice for Arduino and microcontroller projects where you need a larger visual display without using a conventional LCD or OLED screen. Each matrix contains 8 positive row terminals and 8 negative column terminals, providing direct access to all 64 LED segments.
Its compact design makes it suitable for educational electronics projects, digital displays, LED animations, scrolling messages, and DIY embedded applications.
Key Features
- 8×8 LED dot matrix display
- 64 individual LED segments
- Approx. 42mm × 42mm module size
- 8 positive row terminals
- 8 negative column terminals
- Supports displaying letters, numbers, symbols, and patterns
- Suitable for direct control using microcontrollers
- Compatible with Arduino and other development boards
- Ideal for LED animations and scrolling text projects
- Compact and easy to integrate into DIY electronics projects
Specifications
| Specification | Details |
|---|---|
| Display Type | 8×8 LED Dot Matrix |
| Number of LEDs | 64 |
| Matrix Size | 8 Rows × 8 Columns |
| Module Size | Approx. 42mm × 42mm |
| Positive Terminals | 8 Rows |
| Negative Terminals | 8 Columns |
| LED Forward Voltage | 1.5V–2.0V |
| Typical Forward Current | 10mA |
| Maximum Forward Current | 15mA |
| Maximum Reverse Voltage | 5V |
| Operating Temperature | -25°C to +60°C |
| Application | Arduino, Microcontrollers, LED Displays |
8×8 LED Matrix Pin Configuration
The matrix uses 16 pins in total: 8 pins connected to the positive rows and 8 pins connected to the negative columns.
| Pin Number | Connection |
|---|---|
| 1 | 4th Column |
| 2 | 2nd Column |
| 3 | 2nd Row |
| 4 | 3rd Row |
| 5 | 1st Column |
| 6 | 5th Row |
| 7 | 3rd Column |
| 8 | 6th Column |
| 9 | 8th Column |
| 10 | 4th Row |
| 11 | 6th Row |
| 12 | 5th Column |
| 13 | 1st Row |
| 14 | 7th Column |
| 15 | 7th Row |
| 16 | 8th Row |
Note: LED dot matrix displays are available in different configurations, so the exact pinout can vary between models. The pin configuration above corresponds to the 1388A-style matrix. Always verify the pinout of the specific module before connecting it to a circuit.
How the 8×8 LED Matrix Works
The display contains 64 LEDs arranged in 8 rows and 8 columns. Each LED is controlled by selecting the appropriate row and column. By rapidly switching different LEDs on and off, a microcontroller can create characters, numbers, icons, patterns, and animations.
For larger displays or scrolling text, multiple LED matrix modules can also be combined and controlled using suitable driver circuits or microcontrollers.
Applications
The 8×8 LED Dot Matrix Display can be used for:
- Arduino projects
- Microcontroller experiments
- Scrolling text displays
- LED animations
- Digital counters
- Character and number displays
- Simple graphics
- Robotics projects
- Electronic notice boards
- DIY clocks and timers
- Educational electronics projects
- Embedded display systems
How to solve PIN CONFIGURATION issue
As shown above the POSITIVE and NEGITIVE PINS of MATRIX MODULE are irregular and may lead to problems while controlling the LEDs. This issue becomes even more complex when choosing a different MODULE. The best way to solve these problems is rearrange the terminals based on FUNCTION of PIN instead of PIN NUMBER. After rearranging the PINS we will have something as below
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