setBrightness versus HSV If I use FastLED.setBrightness(63);

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1

setBrightness versus HSV

If I use FastLED.setBrightness(63);

to set overall – or universal – brightness to about 1/4, and then later, in void loop I use…

leds[i] = CHSV( 224, 187, 255);

will that specific color override the setBrightness and display at full brightness?

2

No - the brightness that is set using setBrightness is applied to all the leds before they’re written out to the strip - think of it as a global volume knob - but for light, instead of sound.

3

Thank you!

Can I still use HSV to pick my colors?

(With the understanding that the V is basically negated)

I prefer HSV for color selection, and don’t minding setting all the individual V’s if I have to, but being able to use setBrightness is a nice “safety” when I’m experimenting with different effects – to avoid an unplanned for, amp-sucking display of all white full-bright.

4

V isn’t negated – for example, if you do setBrightness(128) and then do leds[0] = CHSV(255,255,255) and leds[1] = CHSV(255,255,128) – leds[0] is going to be at brightness 128 and leds[1] is going to be 64 – so the V value is still important - and all your relative V values will still be the same, relative to each other, scale wise. It’s just that setBrightness(128) will halve the brightness value of all the led data before writing it out.

5

Awesome!

That’s even handier than I had hoped!

Thanks for the detailed explanation and example.