Ring of Fire is a tree ornament I built this year. A big, high-powered, custom-animated tree ornament.
First, there was the idea and a parts list.
Then I wrote a simulator to create animations against.
When that was done, I built the ring and started on the firmware
And then I did a whole bunch of wiring to hook up the microcontroller to the LEDs on the ring, finished the code, and put it up in the tree in my front yard.
Finally, I took a low-quality video of it.