Pixels Staying On

[davdue]

Any ideas why the last 50 pixels of a 400 pixel string work fine but sometimes when they are supposed to be off they look like the attached picture. It isn?t always the same pattern, colors, or number of pixels either

They are controlled wirelessly by an ESPixelPop from a RPi 3B+ running FPP V4.2.




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[gassy]

Are you injecting power along the string? 400 pixels will have too much voltage drop without using power injection.

[MikeKrebs]

Check the configs to make sure you have them correctly identified.

PI could be an issue but looks like they have enough power!

Swap the last 50 with the first 50. Does it still do that?

Are these holiday coro pixels? https://www.holidaycoro.com/kb_results.asp?ID=168

[davdue]

Check the configs to make sure you have them correctly identified.

PI could be an issue but looks like they have enough power!

Swap the last 50 with the first 50. Does it still do that?

Are these holiday coro pixels? https://www.holidaycoro.com/kb_results.asp?ID=168

They are DIYLEDExpress pixels that are several years old. This particular string could have been replaced at some point. I am not sure. By checking configs what do you mean? Everything works during the sequence as it should except for when these pixels are not in use then they do weird things as well as alll 50 are on white after the show.

Are you injecting power along the string? 400 pixels will have too much voltage drop without using power injection.

I am injecting power at the end of the string so maybe I should add another power injection in the middle as well. I think I have an extension that will reach and can add that easy today.

[MartinMueller2003]

Data or V- near the start of the string is "not good" but may good enough when there is an active signal. It is also possibl the last pixel that is behaving is beginning to fail.