The 8×8 LED Dot Matrix Display is a versatile output module widely used in embedded systems, IoT projects, robotics, and academic research for displaying characters, numbers, symbols, and animations. It consists of 64 LEDs arranged in 8 rows and 8 columns, which can be controlled through multiplexing to create dynamic patterns.

Available in common anode and common cathode variants, the 8×8 matrix can be directly interfaced with microcontrollers or driven using dedicated ICs such as MAX7219 or HT16K33, which reduce wiring complexity and GPIO usage. These displays are compact yet powerful, often cascaded to build larger scrolling displays, IoT dashboards, or robotic status indicators.

Key Specifications:

• LED Count: 64 (8×8 grid)

• Drive Type: Multiplexed scanning

• Variants: Common Anode / Common Cathode

• LED Colors: Red (standard), Green, Blue, or Bicolor

• Typical Forward Voltage: 2.0V per LED (red), 3.0V (green/blue)

• Forward Current: 10–20 mA per LED

• Control: Direct GPIO or via drivers (MAX7219, HT16K33, 74HC595)

• Applications: Scrolling text, symbols, IoT device indicators, robotics feedback, digital signage, lab experiments

For researchers, the 8×8 matrix is valuable due to its low cost, scalability, and flexibility, making it an excellent choice for visualizing data, debugging IoT systems, and building interactive research prototypes.