#include "Arduino.h"
#include "FastLED.h"

#define NUM_LEDS 60   // Total number of leds used in the strip
#define DATA_PIN 1    //Data output pin
#define VR_PIN 3      //Potentiometer / Preset Pin for Speed Adjusting
#define buttonPin 0   //Push Button Pin


int colorRed[] = { 0, 15, 30, 45}; //start of color
int colorWht[] = { 5, 20, 35, 50};
int colorBlu[] = {10, 25, 40, 55};
int pres=0;
int VR_SPEED;
int SPEED;

// Define the array of leds
CRGB leds[NUM_LEDS];

void setup() {

  pinMode(0, INPUT_PULLUP);
  FastLED.setBrightness(200);

  FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS);

  for (int i = 0; i < 4; i++) { // repeat pattern four times
    for (int j = 0; j < 5; j++) { // five pixels per color
      leds[colorBlu[i] + j] = 0x0000FF;
      leds[colorRed[i] + j] = 0xFF0000;
      leds[colorWht[i] + j] = 0xFFFFFF;
     
    }
  }
}

void loop() {

  VR_SPEED = analogRead(VR_PIN);
SPEED = map(VR_SPEED, 1000, 0, 25, 100);  //Potentiometer Scroll Speed

  // empty
   FastLED.show();
      //delay(35); //Scroll speed
      delay (SPEED);
      
//move each color one spot over
CRGB x =leds[NUM_LEDS-1];
for (int i = NUM_LEDS-1; i >= 1; i--) {
CRGB temp = leds[i-1];
leds[i] = temp;
}
leds[0]=x;

//Reverse
//CRGB x =leds[0];  
//for (int i = 0; i < NUM_LEDS-1; i++) {
//CRGB temp = leds[i+1];
//leds[i] = temp;
//}
//leds[NUM_LEDS-1]=x;

}