The RGB LED has four legs, the first one is for red-colored LED, and the second one is for common anode or common cathode. There are two types of RGB LED one is a common anode type and the other one is a common cathode type. Common anode and common cathode type RGB LED: Similarly, if you need to generate white color, you would set all three LEDs with the highest intensity. If you want to produce red color, you will set the red LED at the highest intensity along with the green and blue LED with minimal (zero) intensity. We can generate any color by adjusting the brightness of each of the three LEDs of the RGB LED. RGB LED looks just like a regular LED or we can say that an RGB LED has three LEDs (red, green, and blue colored LED) inside a single packaged LED with four legs. RGB LED is the most amazing type of LED that can create millions of different shades of light colors using red, green, and blue colors.
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