LED lamp

1. include <FastLED.h>

1. define NUM_LEDS 25
2. define DATA_PIN 6

CRGB leds[NUM_LEDS];

void setup() {

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

}

void loop() {

 leds[0] = CRGB::Red;
 FastLED.show();
 delay(500);
 
 // Now turn the LED off, then pause
 leds[0] = CRGB::Black;
 FastLED.show();
 delay(500);