Close

Display Driver

A project log for Tileable 8x8 LED matrix

1.0" LED Dot Matrix 8X8 Cascadable Module with SPI interface

Christoph TackChristoph Tack 05/10/2018 at 19:340 Comments

The driver should have SPI or I²C interface and allow dimming.

SPI

I²C

To avoid that the 74HC595 has to source the current for the LED array, transistors will be used, as switches.  Three transistor types could be used : PNP, NPN and PMOS:

Discussions