16×16 serial dot matrix led display module (screen)

This 16×16 LED dot matrix display module consists of four 8×8 dot-matrix units combined into a single screen. It uses two 74HC138 decoders for row selection and two cascaded 74HC595 shift registers for column control, enabling serial-to-parallel data conversion via clock signals.

The module features an LCD12864-compatible interface, allowing straightforward connection to microcontrollers like Arduino without complex wiring. Operating at 5V DC, it supports daisy-chaining multiple modules to create larger displays for visual projects and indicators.

Specifications

• Resolution: 16 × 16 red LED dots
• Control chips: 2 × 74HC138 decoders (rows), 2 × 74HC595 shift registers (columns)
• Interface: LCD12864 compatible (8-bit parallel) + extension pins
• Operating voltage: 5V DC
• Connectors: Data input/output port, LCD12864 interface (requires soldering), DuPont pin headers
• Package contents: Dot matrix module, 8-pin data cable, power cables, jumpers, standoffs

Arduino code examples are available to initialize the display and control individual pixels via pins D0-D7, CLK, and LAT.