Test program for ESP32

esp32.ino

#include <FastLED.h>

#define NUM_LEDS 18

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

void setup() {
    Serial.begin(115200);
    FastLED.addLeds<WS2812, 19, RGB>(leds, NUM_LEDS);
    FastLED.addLeds<WS2812, 21, RGB>(leds, NUM_LEDS);
    FastLED.addLeds<WS2812, 22, RGB>(leds, NUM_LEDS);
    FastLED.addLeds<WS2812, 23, RGB>(leds, NUM_LEDS);
    FastLED.setMaxRefreshRate(0);
}

void loop() {
  int start = millis();
  for (int i = 0; i < 20; i++) {
    FastLED.show();
  }
  int end = millis();
  Serial.println(end-start);
}