MAX7219 8x8 Red LED Dot Matrix Display Module 5V (Cascadable)
MAX7219 8x8 Red LED Dot Matrix Display Module 5V (Cascadable)
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Short Product Description
Short Product Description
This MAX7219 8x8 Red LED Dot Matrix Display Module lets you display scrolling text, numbers, and custom icons using only three microcontroller I/O pins. Operating at 5V DC, the onboard MAX7219 serial driver handles multiplexing internally to provide flicker-free red illumination. It features both input and output 5-pin headers for easy daisy-chaining of multiple panels and includes a 5-pin DuPont jumper cable, making it ideal for Arduino, Raspberry Pi, and 51 MCU DIY signage projects.
Key Features
Key Features
- 3-Wire Serial Interface: Drives all 64 red LEDs using just DIN, CS, and CLK pins, saving valuable microcontroller GPIOs.
- Supports Multi-Module Cascading: Dual 5-pin input and output headers let you chain multiple displays into wider scrolling text boards.
- Socketed MAX7219 Driver IC: Uses a DIP-24 MAX7219 controller mounted in an IC socket for flicker-free multiplexing and hardware brightness control.
- Included 5-Pin DuPont Cable: Comes with a 5-pin female-to-female jumper ribbon cable for immediate breadboard or Arduino prototyping.
- M3 Mounting Ready: Compact 50 x 32mm PCB includes four 3mm mounting holes for clean installation with M3 standoffs.
Full Product Description
Full Product Description
Flicker-Free 8x8 Dot Matrix Control with 3 I/O Pins
The MAX7219 driver IC manages all 64 common-cathode red LEDs internally so your microcontroller only needs three data lines (DIN, CS, and CLK). Equipped with an internal 8x8 static RAM, BCD decoder, and scan-limit register, the MAX7219 lets you update individual pixels without rewriting the entire screen. It supports both analog and digital brightness control as well as a 150µA low-power shutdown mode for energy-conscious builds.
Easy Cascading and Ready-to-Wire Hardware
This green PCB module features a 5-pin input header on the left and a matching 5-pin output header on the right for effortless cascading. To link multiple modules into a wide scrolling marquee, connect your microcontroller to the first module's input (VCC, GND, DIN, CS, CLK), then wire its output directly to the next module's input. Each unit includes four 3mm mounting holes compatible with M3 brass standoffs and comes with a 5-pin female-to-female DuPont ribbon cable.
Technician Tip
Pay close attention to the input/output orientation and power supply current when daisy-chaining multiple MAX7219 panels. Our technicians at Sun Cheong advise always connecting your Arduino or MCU data pins to the left-side input header (marked VCC, GND, DIN, CS, CLK)—plugging into the right-side output port (DOUT) will result in a blank or non-responsive display. When cascading three or more modules at high brightness, power the VCC and GND rails from an external regulated 5V supply rather than relying solely on a microcontroller's onboard 5V regulator.
Technical Specifications
Technical Specifications
- Driver IC: MAX7219 (DIP-24, Socketed)
- Display Matrix: 8x8 Common-Cathode Red LED (HL-M1388AR)
- Operating Voltage: 5V DC
- Shutdown Mode Current: 150µA
- Interface Pins: 5-Pin Input / 5-Pin Output (VCC, GND, DIN/DOUT, CS, CLK)
- Dimensions (L x W x H): 50mm x 32mm x 13–15mm
- Mounting Holes: 4x 3mm diameter (fits M3 standoffs)
- Weight: 23g
- Included Accessories: 1x 5-Pin Female-to-Female DuPont Ribbon Cable
- Brand / GTIN: Not specified — confirm manually
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
- Can I connect this 5V MAX7219 dot matrix module directly to a 3.3V ESP32 or Raspberry Pi?Yes, many makers run the MAX7219 from a 5V VCC supply while sending 3.3V SPI/GPIO signals on DIN, CS, and CLK, though adding a logic level shifter ensures the most reliable signal margin on longer chains.
- How is this socketed MAX7219 green module different from a 4-in-1 FC16 blue module?This single 8x8 module uses a removable DIP-24 MAX7219 chip and right-angle headers on both sides for flexible spacing, whereas 4-in-1 modules combine four smaller matrices onto one fixed PCB.
- Why does my MAX7219 display fail to light up or show all LEDs stuck on when powered?First verify you wired the microcontroller to the left-side input header (DIN) rather than the right-side output (DOUT), and confirm the 5V supply provides sufficient current.
- Can I pick up M3 brass standoffs and additional 5-pin DuPont cables at your Sham Shui Po store?Yes, you can pick up M3 brass standoffs, 5V power supplies, and extra DuPont jumper cables alongside this display at our Sham Shui Po store (新昌電腦有限公司).
- How many MAX7219 dot matrix modules can I daisy-chain together on one Arduino?The MAX7219 serial shift-register architecture allows chaining many modules in series using the same three I/O pins, limited mainly by your external 5V power supply capacity and microcontroller RAM.
Target Users / Applications
Target Users / Applications
- Arduino, 51 MCU, and Raspberry Pi makers building desktop scrolling clocks, weather tickers, or subscriber counters.
- STEM students and electronics classes learning SPI/serial shift-register display multiplexing.
- DIY hobbyists building custom scoreboards, retro arcade indicators, or audio spectrum visualizers.
