How To Create An Awesome Disco Light Effect With The Esp32-wrover
We will learn how to control a RGB LED. It can emit different colors of light. Next, we will use
RGB LED to make a multicolored light.
RGB LED has integrated 3 LEDs that can respectively emit red, green and blue light. And it has 4 pins. The long pin (1) is the common port, that is, 3 LED 's positive or negative port. The RGB LED with common positive
port and its symbol is shown below. We can make RGB LED emit various colors of light by controlling these 3 LEDs to emit light with different brightness.
Red, green, and blue are known as three primary colors. When you combine these three primary-color lights with different brightness, it can produce almost all kinds of visible lights. Computer screens, single pixel of cell
phone screen, neon, and etc. are working under this principle.
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