Yves BAZIN Hi! In my project:

@Yves_BAZIN it worked before, but now it doesn’t help

@X-WL1 if you display static image does that appear too

@Yves_BAZIN Now: a static picture of a rainbow, the data is sent - flickers. static rainbow picture, no data is sent - static garbage.

if you perform darker effects (for example, sinelon), it does not flicker.
This is not a power problem. 60A quality block for 8 * 118 diodes.
On @Sam_Guyer branch, it was possible to achieve a picture without interference on the maximum white color.

@X-WL1 I see. This is really strange I will check this config again. I am using the same library so I don’t see Why the issue

@Yves_BAZIN maybe bad leds?

@X-WL1 I doubt it.

@Yves_BAZIN Some strips blink more often than others. And if you add another strips, current strips is don’t blink and the other strips will blink. I’m confused.

@X-WL1 could you try not taping all the wires from the mcu to the level shifter together ?

@Yves_BAZIN now after your advice, they are wrapped in gnd, but yes, I’ll check it out. After level shifter each data line has its own gnd