Dot 8X8 LED Matrix Module

8×8 LED Matrix modules are now widely available, and fortunately they are easy to use with our favorite Arduino microcontroller. 8×8 LED Matrix module have many applications in real life, such as various types of electronic display panels.

The LED matrix can be driven in two ways (parallel or serial). Here we drive it in the serial manner in order to save interface (needs only three data lines). The serial-driven LED matrix actually dynamically displays the LEDs (row-by-row or column-by-column). The persistence of vision for humans is about 0.1s, so as long as we can serially display all 8 rows/columns within 0.1s, we’ll see a complete character or pattern.