Introducing the Red Green Blue (RGB) LED
The Red Green Blue (RGB) LED is 3 LEDs in one. The RGB has four pins
with each of the three shorter pins controlling an individual color: red, green
or blue. The longer pin of the RGB is the common ground pin. You can
create a custom colored LED by turning different colors on and off to
combine them. For example, if you turn on the red pin and green pin, the
RGB will light up as yellow.
But which pin is which color? Pick up the RGB so that the longest pin
(common ground) is aligned to the left as shown in the graphic below. The
pins are Red, Ground, Green and Blue – starting from the far left.
Note:
When wiring the RGB, each colored pin still needs a current-
limiting resistor in line with the RedBoard pin that you plan to use to
control it, as with any standard LED.
Hardware Hookup
Ready to start hooking everything up? Check out the wiring diagram and
hookup table below to see how everything is connected.
Polarized
Components
Pay special attention to the component’s markings
indicating how to place it on the breadboard. Polarized
components can only be connected to a circuit in one
direction. Polarized components are highlighted with a
yellow warning triangle in the table below.
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