Flickering/Flashing with NodeMCU esp32 and wemos d1 mini esp8266 about hyperserialesp32 HOT 5 CLOSED

Hi
If the problem concerned one board, we might suspect some incompatibility in timings with your LED strip (although we still use the Neopixelbus library just like WLED, only with slightly different methods). You don't need to change the port serial speed if it works, because packet control is maintained anyway, so we won't display the damaged one (at most we'll skip it). I suspect that something has changed in your hardware, connections or their lengths, or something has affected the ground because, for example: WLED does not have to have a direct cable connection to the unit, only to the power supply. The question is how do you power the ESP and how is everything connected now, do you have a level shifter, etc

from hyperserialesp32.

Well I tried to paint my setup

this works fine without a level shifter.

and this setup does not work.

I forgot to mention that I have WS281x LEDs.

Since it did work with WLED I did not suspect that I need a level shifter.
I will try that soon und report back.

from hyperserialesp32.

How is ESP board powered in the first (working) scenario? And is there a common ground in the second (not working) case?

from hyperserialesp32.

And is there a common ground in the second (not working) case?

You need to connect ground and data line from ESP (HyperSerial) to the LED strip. I dont see it on the diagram

from hyperserialesp32.

How is ESP board powered in the first (working) scenario? And is there a common ground in the second (not working) case?

It is powered by the same PSU which also powers the LEDs. It supplies 5V to both.

And is there a common ground in the second (not working) case?

You need to connect ground and data line from ESP (HyperSerial) to the LED strip. I dont see it on the diagram

I did connect the data line but did not think about the ground. I will check. Thanks

from hyperserialesp32.