#include <FastLED.h>
#define LED_PIN 5        // Replace with the pin number you used for DATA connection
#define NUM_LEDS 20       // Replace with the number of LEDs in your strip
#define GRADIENT_DELAY 50 // Delay between gradient color changes (in milliseconds)
#define MOVEMENT_DELAY 20 // Delay between LED movements (in milliseconds)
CRGB leds[NUM_LEDS];
void setup() {
  FastLED.addLeds<WS2811, LED_PIN, RGB>(leds, NUM_LEDS);
}
void loop() {
  // Set the initial color gradient
  CRGB startColor = CRGB::Red;
  CRGB endColor = CRGB::Blue;
  // Calculate color step values
  int colorStepsR = (endColor.r - startColor.r) / NUM_LEDS;
  int colorStepsG = (endColor.g - startColor.g) / NUM_LEDS;
  int colorStepsB = (endColor.b - startColor.b) / NUM_LEDS;
  // Move the gradient effect across the LED strip
  for (int i = 0; i < NUM_LEDS; i++) {
    CRGB gradientColor = CRGB(startColor.r + (colorStepsR * i),
                             startColor.g + (colorStepsG * i),
                             startColor.b + (colorStepsB * i));
    // Shift the gradient by moving the LEDs
    for (int j = 0; j < NUM_LEDS; j++) {
      int index = (i + j) % NUM_LEDS;
      leds[index] = gradientColor;
    }
    FastLED.show();  // Update the LED strip
    delay(MOVEMENT_DELAY);  // Delay between LED movements
  }
  // Shift the colors for the next frame
  startColor = endColor;
  endColor = CRGB::Green;
}