Lesson 3 7-Color Auto-flash LED

Introduction

On the 7-Color Auto-flash LED module, the LED can automatically flash built-in colors after power on. It can be used to make quite fascinating light effects.

Required Components

• 1 * Raspberry Pi

• 1 * Breadboard

• 1 * 7-color auto-flash LED module

• 1 * 3-Pin anti-reverse cable

Experimental Principle

When it is power on, the 7-color auto-flash LED will flash built-in colors.

The schematic diagram of the module is as shown below:

Experimental Procedures

Build the circuit.

Raspberry Pi	GPIO Extension Board	Auto-flash LED Module
GND	GND	GND
3.3V	3V3	VCC

Note

There are two “GND” pins on the module. You only need to connect one of them.

Now, you will see 7-color auto-flash LED flashing seven colors.