Here is the stock NoisePlayground Example sketch with:  kMatrixSerpentineLayout  false Both of these videos

Archive FastLED Archive
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Here is the stock NoisePlayground Example sketch with:
#define kMatrixSerpentineLayout false

Both of these videos have the master brightness at 45, but the bright lines are extremely bright.

69d7cd5651a34ba71e38ffdc374863d2.gif
69d7cd5651a34ba71e38ffdc374863d2.gif854×480 187 KB

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Play around with the brightness. Mark and I are going to be tweaking around the octave stuff to cut back on some of that a bit - but basically brightness, right now, likely needs to be adjusted as you increase octaves. (Now that i’ve got the basic stuff running with this - I’m looking to make frequency/amplitude passed in options as well)

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Ok, I set the master brightness to 25, and the brightness at it’s peak is closer to 45 now.