Some month ago I got new pair of T2 ramp entrance sign (Skynet) from Struppy (a guy from Germany). This looks awesome.
Then I had an idea to put 2 LED lights at the bottom. Red and white.
In game the sign should light white. But when the other side was played, the light should goes red, because the next shot here will count a million.
I use two attiny controller with an LDR that looks onto the million insert. When it is blinking, the LED of the sign should goes red.
Hard to explain. Look at this video.
This is just a prototype. But if someone is interested, please let me know.