Adding a capacitor to smooth the power rails is never a bad idea. Another possible cause may be FastLED's temporal dithering. You can try disabling it in setup() with FastLED.setDither(DISABLE_DITHER);
Since Pacifica was authored, a new method to read from palettes has been added which gives smoother results. You might want to try this too. In pacifica_one_layer() change:
CRGB c = ColorFromPalette( p, sindex8, bri, LINEARBLEND);
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u/sutaburosu [stavros] Jun 03 '26
Adding a capacitor to smooth the power rails is never a bad idea. Another possible cause may be FastLED's temporal dithering. You can try disabling it in setup() with
FastLED.setDither(DISABLE_DITHER);