esp32.ino

#include "FastLED.h"

#define DATA_PIN    18
//#define CLK_PIN   4
#define LED_TYPE    WS2812
#define COLOR_ORDER GRB
#define NUM_LEDS    64
CRGB leds[NUM_LEDS];

#define BRIGHTNESS          96

void setup() {

  pinMode(DATA_PIN, OUTPUT);
  
  // tell FastLED about the LED strip configuration
  FastLED.addLeds<LED_TYPE,DATA_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);

  // set master brightness control
  FastLED.setBrightness(BRIGHTNESS);
  
  fill_solid(leds, NUM_LEDS, CRGB::Blue);
  FastLED.show();

}
  
void loop()
{
}