I realized I want to do everything with HSV.

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1

I realized I want to do everything with HSV.
Is there a better way than
uint8_t h[NUM_LEDS], s[NUM_LEDS], v[NUM_LEDS];
as global variables that I can adjust from every function?

like so:

uint8_t h[NUM_LEDS], s[NUM_LEDS], v[NUM_LEDS];

for (int i = 0; i < NUM_LEDS; i++) { leds[i]= CHSV(h[i],s[i],v[i]); }
FastLED.show();

2

What’s the goal?

There are a lot of ways to do this, but I generally use both a CRGB array and a CHSV array, and do all my work on the CHSV array, calling hsv2rgb_rainbow() just before I call show.

Uses roughly 2x the RAM, but unless you’re doing this with 1000’s of LED’s, most non 8-bit Arduino have more than enough capacity to handle it.

3

I’ve done something similar with a slight difference to your code:

CRGB leds[NUM_LEDS];

// define a second array of led data as HSV
CHSV hsv[NUM_LEDS];

// code, pattern, animation that sets/modifies the HSV array

// copy HSV data to leds
// FastLED will automatically convert HSV to RGB
for(uint16_t i = 0; i < NUM_LEDS, i++) {
leds[i] = hsv[i];
}

4

Thanks guys. Peter, the “goal” is just that I found using HSV was giving me much smaller and cleaner code. Since a lot of my effects are shifting and dimming individual leds in small amounts.

I also found that my leds, WS2813s are kinda weird. The Yellow for instance is at hue 80. And adjusting that is just much simpler with hue than RGB.