Sudden LED flickering in a perfectly working setup

hey guys need some help with LED flickering on a setup that had worked without issues so far. There were no software or hardware changes done recently, so am stumped by the sudden crazy flickering issue.

I have Hyperion NG 2.0.12 running on Pi4/Librelec 9.2 driving an apa102 strip of 94 LEDs. The LEDs are powered by a 12V/10A PSU and the Pi with a 3V/5A PSU. I remember reading somewhere with regards to grounding that could cause flicker but I can't remember what it was exactly. Also given that I am using different PSU for Pi and the strip didn't really wanna mess with grounding without a proper knowledge of what I am doing. Also the fact that it just started flickering only for the past 2 weeks is making this more confusing.

Any help to get rid of the flicker would be appreciated. The flickers are usually brighter than the ambilight and are of random colors, so it is really spoiling the whole ambilight experience.

Zitat von pclin

You need a common ground.

So how do I go about doing it? I am very cautious about not shorting out anything. And yea it is a 5V/10A PSU for the strip. My bad

I do have mine setup that way. A complete power cycle of the Pi seem to have done the trick. So far I was just doing a restart from kodi rather than at the mains. Anyway all good now, Thanks for the help