Product Description
Add dynamic visual feedback to your projects with the MAX7219 LED Dot Matrix 4-in-1 Display. This module integrates four 8x8 dot matrix units into a single 8x32 display panel, controlled by the powerful MAX7219 serial input/output common-cathode driver IC. At Robogears, we recommend this module for its high-efficiency serial interface, which allows you to control all 256 LEDs using only three data pins from your microcontroller. This makes it a perfect solution for scrolling text displays, digital clocks, and status indicators in your Arduino or Raspberry Pi builds. The module comes with pre-soldered input/output headers and a 5-pin female-to-female jumper wire, enabling immediate "out-of-the-box" connectivity.
Detailed Key Features
Integrated 4-in-1 Array: Combines four 8x8 matrix units into a seamless 32-column display for scrolling text and complex animations.
Simplified Serial Interface: Employs a 3-wire SPI communication protocol (DIN, CS, CLK), significantly reducing the number of I/O pins required on your controller.
Individual LED Control: The MAX7219 IC handles all BCD decoding and multiplexing, allowing you to address each of the 256 LEDs individually with zero flickering.
Expandable Daisy-Chain Support: Features both input and output headers, allowing multiple modules to be linked together to create ultra-long scrolling displays.
Stable Brightness Management: Includes a digital and analog brightness control via software, ensuring consistent luminosity across the entire matrix.