Description

This is 8×32 (row by column 256x LED) dot matrix LED displays module based on MAX7219 IC. The displays are designed so that they can be mounted in a horizontal chain and can also be expanded in a vertical plane allowing versatile displays panel to be built. A convenient 3-wire serial interface connects to all common controller board like Arduino or Raspberry. Individual dot may be addressed and updated without rewriting the entire display. This module can be daisy chain to form a display panel for scrolling message board.

Brief Data:

• Matrix Size: 32×8 ( 256-Dots)
• Display Size: 128×33 mm.
• Display Color: Green.
• Interface: 3-Wires Serial Interface.
• Daisy chain for multiple modules.
• Operating voltage: 4.5 ~ 5V.
• Module size: 128 x 33 x 15 mm (L x W x H).
• Mounting Hole: M3.

Wiring:

1. The input port is in the left side of module, and the onput port is in the right left of that.
2. When only control a single module, just need to connect the input port to CPU.
3. When connect more modules, input port of the first module should connect CPU, onput port of that connects the input port of the second module, and the onput port of the second module connects the input port of the third module, and so on.

Taking 51-Single Chip Micyoco as an example:

• VCC connects to 5V
• GND connects to GND
• DIN connects to P2.2
• CS connects to P2.1
• CLK connects to P2.0

PACKAGE INCLUDES:

• MAX7219 8×8 Dot Matrix (x4) Green Display Module
• (15cm) 5-wire F/F cable for hook-up or daisy-chaining multiple displays.
• 5-pin right-angle male header