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Lesson 4 RGB LED
Overview
RGB LEDs are a fun and easy way to add some color to your projects. Since they are
like 3 regular LEDs in one, how to use and connect them is not much different.
They come mostly in 2 versions: Common Anode or Common Cathode.
Common Anode uses 5V on the common pin, while Common Cathode connects to
ground.
As with any LED, we need to connect some resistors inline (3 total) so we can limit
the current being drawn.
In our sketch, we will start with the LED in the Red color state, then fade to Green,
then fade to Blue and finally back to the Red color. By doing this we will cycle
through most of the color that can be achieved.
Component Required:
(1) x Elegoo Mega2560 R3
(1) x 830 Tie Points Breadboard
(4) x M-M wires (Male to Male jumper wires)
(1) x RGB LED
(3) x 220 ohm resistors