Hi, I first tried my Unicorn Hat on a new Pi Zero W but got the ws2811_init failed with code -1
Exiting cleanly error that other people have reported.
I have now put it on a Pi 3 and it works almost fine, apart from a few pixels. On one LED the red has never worked. A couple of others have failing red or blue sometimes.
I have done the apt-get upgrade, update etc and turned sound off in config.txt, but no joy. It’s powered by the ‘official’ adapter.
Is it just a bad unit, or could there be another explanation?