How to Program WS2813 Addressable LED Strips with ESP32

				
					// Define RGB pins
const int redPin = 9;    // Red pin connects to PWM pin 9
const int greenPin = 10; // Green pin connects to PWM pin 10
const int bluePin = 11;  //The blue pin is connected to PWM pin 11
// Fade speed control (milliseconds)
const int fadeSpeed = 20;

void setup() {
  // Set the pin to output mode
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
  
  // Initial state: all off (common anode)
  analogWrite(redPin, 255);
  analogWrite(greenPin, 255);
  analogWrite(bluePin, 255);
}

void loop() {
  // Red→Green Gradient
  for (int i = 0; i <= 255; i++) {
    analogWrite(redPin, i);
    analogWrite(greenPin, 255 - i);
    analogWrite(bluePin, 255);
    delay(fadeSpeed);
  }
  
  //Green→Blue Gradient
  for (int i = 0; i <= 255; i++) {
    analogWrite(redPin, 255);
    analogWrite(greenPin, i);
    analogWrite(bluePin, 255 - i);
    delay(fadeSpeed);
  }
  
  // Blue→Red Gradient
  for (int i = 0; i <= 255; i++) {
    analogWrite(redPin, 255 - i);
    analogWrite(greenPin, 255);
    analogWrite(bluePin, i);
    delay(fadeSpeed);
  }
}