I just got my hands on a new Unicorn HAT, a GPIO cable, and a box header for my Raspberry Pi 2. I (think I’ve) got it all set up, however I don’t get any LED output when plugged in to the GPIO cable. When the HAT is plugged directly into the Pi things work as expected. Any thoughts?
(Just FYI, in case anyone’s interested, the way I’ve got this set up is the HAT is command-stripped to the back of a MacBook Pro lid and is outputting lights through the Apple logo. The reason I’d like to use the cable is that the Pi doesn’t sit flush on the hat because of its thickness.)