The question is: wouldn’t it be nice if your Unicorn library could check for the right mode of this pin?
Writing a warning to the console helps to determine the cause of the issue very easily.
Just my 2 cents.
That’s interesting. I think you took the long way around though, AFAIK this is handled at low-level by the ws281x lib, but something else is at play in recent version of Raspbian.
I do know that there’s been some changes to the repo recently that may also throw factors in the picture that I’m not aware of… how did you install the unicorn library, from git or using the one-liner installer?