Not sure what this has to do with the Train Thing, but I spent most of the week playing working with the Unicorn HAT(s) for the Raspberry Pi. Working with the examples provided by Pimoroni in one used two Unicorns side by side. How could I resist? Well the example didn't work with just one Unicorn HD HAT so I built the interface/cables to hook-up two. Still does not work. Their forum has not provided an answer, yet. It is thanksgiving week. I am sure I can make this related, so the documentation is included. Multi-forum helps posted.

The last hardware to be built (except for semaphores) was the tri-light parking lot signals Seen installed here.

This completes Phase I of the project.

The hardware is finished, with the exception of designing/building/installing of the servo controls and semaphores, in phase III.