#include <Adafruit_NeoPixel.h>

#define LED_PIN     5   // Pin where the LED strip is connected
#define LED_COUNT  32   // Number of LEDs in the strip

Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  hueCycle(10); // Speed of the hue cycle (lower is faster)
}

void hueCycle(uint8_t wait) {
  static uint16_t hue = 0; // Hue value (0-65535)
  for (int i = 0; i < LED_COUNT; i++) {
    strip.setPixelColor(i, strip.ColorHSV(hue + (i * 65536L / LED_COUNT)));
  }
  strip.show();
  hue += 256; // Adjust speed of hue change
  delay(wait);
}