#include <Adafruit_NeoPixel.h> //Used for the LED strips
Adafruit_NeoPixel returns(1630, 3, NEO_GRB + NEO_KHZ800);

int count;
int inc = 256; // 128 / 256/ 512... smaller is smoother
int rate = 10;
unsigned long tick = 0;

void setup() {
  returns.begin();
  returns.show();
}

void loop() {
  //returns.rainbow(count, 1, 255, 200, 1);
  returns.rainbow(count);
  returns.show();
  
  if(tick < millis() + rate){
    count += inc;
    tick = millis() + rate;
  }
  
}