Function setup

examples/Fx/Particles1d/Particles1d.h:46–50

uint32_t lastSpawnTime = 0;

void setup() {
    fl::ScreenMap screenMap = fl::ScreenMap::Circle(NUM_LEDS, 5.0, 5.0);
    FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS).setScreenMap(screenMap);
    FastLED.setBrightness(64);
}

void loop() {
    uint32_t now = fl::millis();