This is more than just an RGB LED; it has a built-in controller programmed to smoothly fade through a random sequence of colors, at a rate of about 1 transition every 5 seconds.
This creates a stunning visual effect, without any additional circuitry. This is an ideal LED to use as the centerpiece of an attention-grabbing electronics science-fair project.
The LED runs directly on 3-4.5 Volts DC, or on 5VDC with a 270-Ohm 1/4W resistor in series to limit the current (available from Vetco).
This is a package of 3 LEDs.
See our video demonstration of this unit on YouTube!