ADEEPT Ultimate Sensor Kit for Raspberry Pi - Lesson 24 Dot-Matrix Display

Lesson 24 Dot-matrix Display
Introduction
The module drives the 8*8 LED Matrix by cascading two 74HC595 chips. The module
communicates with the microcontroller through SPI(Serial Peripheral Interface). It only
occupies three I/Os of the Raspberry Pi and save precious ones for connecting other
devices.
Components
- 1 * Raspberry Pi
- 1 * GPIO Extension Board
- 1 * 40-Pin GPIO Cable
- 1 * Breadboard
- 1 * 8*8 LED Matrix Module
- 1 * 5-Pin Wires
Experimental Principle
The Fritzing image:
The Physical picture:
Pin definition:
DS
Input
SH_CP
Input
ST_CP
Input
+
VCC
-
GND