MAX7219 4-in-1 Dot Matrix LED Display Module
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৳ 420.00৳ 500.00 (-16%)
This MAX7219 4-in-1 Dot Matrix LED Display Module integrates four 8×8 matrices into a single, seamless 32×8 LED panel [Image 1.2.1, Image 1.2.5]. Controlled by an embedded MAX7219 driver assembly, it consolidates all 256 pixels to run efficiently off a 3-wire SPI serial interface, saving valuable microcontroller pins [Image 1.2.1, Image 1.2.15]. The module includes input and output headers for easy daisy-chain cascading, making it the perfect choice for building scrolling text banners, tickers, digital clocks, and simple animations with Arduino, Raspberry Pi, or ESP32 boards
The MAX7219 4-in-1 Dot Matrix LED Display Module is a highly efficient, pre-assembled display solution engineered to add clean visual graphics, numerical telemetry, and fluid scrolling text tickers to microcontroller-driven projects [Image 1.2.1, Image 1.3.2]. Instead of configuring individual single-unit displays, this high-density layout integrates four separate 8×8 common-cathode blocks into a singular, unified 32×8 LED screen array containing 256 individual pixels on a single PCB track [Image 1.2.1, Image 1.2.5].
The primary advantage of this panel is its massive saving on system I/O pins. By combining four specialized MAX7219 hardware driver chips on the underside of the board, the module multiplexes the entire panel using a compact 3-wire SPI serial communication interface (plus VCC and Ground) [Image 1.2.1, Image 1.2.15]. This allows developers to leave critical microcontroller pins open for additional sensors, buttons, or relays. The panel is fully ready for rapid prototyping, shipping with right-angle headers and a 5-wire multi-colored DuPont ribbon connector cable for instant hookup [Image 1.2.1, Image 1.2.15].
One of the most powerful characteristics of this module is its daisy-chain cascading architecture [Image 1.2.15, Image 1.3.2]. The input array pins (VCC, GND, DIN, CS, CLK) on one side interface directly with your microcontroller, while the opposite side exposes an identical mirrored output header row (VCC, GND, DOUT, CS, CLK) [Image 1.2.1]. This allows users to couple multiple panels together side-by-side to generate long, continuous electronic reader boards, automated text tickers, or graphical visualizers without changing your primary hardware architecture [Image 1.3.2, Image 1.4.3].
Key Technical Specifications
| Feature | Specification |
|---|---|
| Integrated Driver IC | 4x MAX7219 Serially-Interfaced Display Drivers [Image 1.2.1] |
| Total Pixel Matrix | 32 x 8 Pixels (256 individual LED nodes) [Image 1.2.1, Image 1.2.5] |
| Operating Input Voltage | DC 5V (Stable 4.7V to 5.3V required) |
| Communication Bus | 3-Wire Serial SPI Protocol (DIN, CS, CLK) [Image 1.2.15] |
| Logic Level Compatibility | 5V Logic (Can function with 3.3V systems like ESP32) |
| Module Length | Approx. 12.8cm x 3.2cm x 1.3cm |
| Chassis Mechanical Anchors | 4 integrated 3mm screw holes for rigid mount panels |
Standard System Pin Mapping
| Module Pin | Description | Connection Track (e.g., Arduino Uno) |
|---|---|---|
| VCC | 5V DC Power Input | Connects to 5V Output Pin (External supply recommended for multiple modules) |
| GND | System Ground Reference | Connects to any System GND Track |
| DIN | Data Input Line | Connects to Digital Pin 11 (Hardware MOSI or custom Software SPI) |
| CS | Chip Select / Load Line | Connects to Digital Pin 10 (SS or any matching allocated digital I/O) |
| CLK | Clock Input Synchronizer | Connects to Digital Pin 13 (Hardware SCK or assigned software clock) |
Common System Applications
- Smart IoT Clocks & Planners: Designing network-synchronized matrix clocks, countdown timers, and desk productivity planners via ESP8266 or ESP32 links [Image 1.4.3].
- Live Environmental Tickers: Streaming text displays that stream real-time weather alerts, stock indices, crypto metrics, or system CPU performance statistics [Image 1.3.2, Image 1.4.4].
- Robotics Visual Expressions: Creating wide animated eyelids, scanning sensors, or alphanumeric mouth grilles on automated robot platforms and interactive fixtures.
- Point-of-Sale & Store Banners: Deploying customizable, scrolling informational message banners inside store windows or commercial check-out counters [Image 1.2.15].
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