Raspberry Pi, Unicorn HAT HDUnicorn HAT on top of Raspberry Pi stack. (Yes, there is already an LED failure.)


Raspberry Pi, Unicorn HAT HD with extension


Cable and Unicorn HAT mount so LED array can be on top next to track and Raspberry and servo HATs can be under the layout.


Raspberry Pi, Unicorn HAT HD extension schematic Raspberry Pi / Unicorn HAT HD pinout

Two Unicorn HD HATs


Doule  Unicorn HAT HD extension schematic


Unicorn Header