Schematic Tau-Board (old)
As you can see, this is a professionally executed project ;-)
Anyway, because the lights are controlled by a Raspberry Pi, they can be accessed through the magic of the internet (hence this website). So if you want to control the lights in my room, click there:
If you're still confused why it's called "tau", click here or here.
It's called a Raspberry Pi (Yes, it's a very bad pun).
The lights in action
Click the lights to turn them on and off.
Tau Day 2017
This was about ten hours of live stream