RGB Full Colour 5mm LED

RGB LED is a combination of three LEDs in just one package: red, green and blue; there are two kinds of RGB LEDs: common cathode and common anode RGB LEDs; you generate different colors by adjusting the brightness of each of the three LEDs of the RGB LED; to adjust the brightness of each LED, you use a Pulse-width modulation, also known as pulse-duration modulation or pulse-length modulation, is any method of representing a signal as a rectangular wave with a varying duty cycle.