I received my Pi3 and Unicorn HD hat on Friday, thank you! But The Unicorn HD seems dead. I can’t get anything out of it. I read from other similar forum posts that there’s supposed to be some sort of white LED pattern showing when power’s applied, even without using the python lib to do your own stuff? Mine refuses to do anything. I’ve made sure it’s firmly seated on the pins, removed & re-installed a couple of times, checked for any small debris in the socket - all fine. I downloaded the software (definitely the HD version, not the non-HD one), and the examples run with no errors, just the expected console messages, but no lights on the Unicorn.
Is there something I can try to check if the Pi is even seeing the Unicorn? Some way to interrogate the SPI bus?
It’s my first Pi and other than the Unicorn HAT not working, everything’s been great!