try-first-fastled

// I tried the first one first, and then the second one!
// They are somewhat edited, because I changed the DATA_PIN numbers a lot (started at 2),
// and I also changed the colors a lot as well, number of LEDs targeted etc.

// first one!!!
#include <FastLED.h>
#define NUM_LEDS 60
#define DATA_PIN 5
#define COLOR_ORDER GRB
#define CHIPSET WS2812B
#define BRIGHTNESS 60
#define VOLTS 5
#define MAX_AMPS 500

CRGB leds[NUM_LEDS];

void setup() {
  FastLED.addLeds<CHIPSET,DATA_PIN,COLOR_ORDER>(leds,NUM_LEDS);
  FastLED.setMaxPowerInVoltsAndMilliamps(VOLTS,MAX_AMPS);
  FastLED.setBrightness(BRIGHTNESS);
  FastLED.clear();
  FastLED.show();
}

void loop() {
  leds[0] = CRGB(255,0,0);
  leds[1] = CRGB(255,0,0);
  FastLED.show();
  delay(100);
}

// second one!!!
#include <FastLED.h>
#define NUM_LEDS 7
#define DATA_PIN 2
// #define COLOR_ORDER GRB
#define CHIPSET WS2812B
#define BRIGHTNESS 60
#define VOLTS 5
#define MAX_AMPS 500

CRGB leds[NUM_LEDS];

void setup() {
  // put your setup code here, to run once:
  delay(2000);
  FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
}

void loop() {
  leds[0] = CRGB(255,0,0);
  leds[1] = CRGB(0,255,0);
  leds[2] = CRGB(0,255,0);
  leds[3] = CRGB(0,0,255);
  leds[4] = CRGB(0,0,255);
  leds[5] = CRGB(0,0,255);
  leds[6] = CRGB(0,0,0);
  FastLED.show();
  delay(1000);
}