Rainbow Desk Sign

/*
 * Project: Marque Sign
 * Description: NeoPixel Code to lightup laser engraved desk sign
 * Author: Brian Rashap
 * Date: 19-Aug-2020
 */

#include <Adafruit_NeoPixel.h>

// Declare NeoPixel Opject
#define LED_PIN    17
#define LED_COUNT 10
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();           // INITIALIZE NeoPixel strip object (REQUIRED)
  strip.show();            // Turn OFF all pixels ASAP
  strip.setBrightness(50); // Set BRIGHTNESS to about 1/5 (max = 255)
}

void loop() {
  rainbow(10);             // Flowing rainbow cycle along the whole strip
}

void rainbow(int wait) {
  // Hue of first pixel runs complete loop through the color wheel.
  for(long firstPixelHue = 0; firstPixelHue < 65536; firstPixelHue += 256) {
    // Offset hue so that once full rotation of color wheel along step
    for(int i=0; i<strip.numPixels(); i++) { 
      int pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());
      strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue)));
    }
    strip.show();
    delay(wait);
  }
}