Lesson 6 Auto-flash LED

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The 7-color auto-flash LED module can automatically flash built-in colors after power on. It can be used to make quite fascinating light effects.


– 1 * SunFounder Uno board

– 1 * USB data cable

– 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:

Experimental Procedures

Just connect pin VCC of the module to 5V of the SunFounder Uno board and pin GND to GND.

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

Now, you should see the LED flashing seven colors.