-size: 1em;">functions that handle the WebSocket communication, HTTP requests and OTA updates. When such an event happens, the appropriate handler functions will be executed. These are defined elsewhere.</span>
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        <br>
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        The second part is the rainbow effect. If it is turned on, it cycles through the color wheel and sets the color to the RGB LED. 
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        If you don't understand why I use millis(), you can take a look at the <a href="https: