I've been working on an updated lighting kit for the ramps of Threatre of Magic based on the pinduino v0.3. ToM is a bit non-standard for controlling its flashers, using transistors from J126 and J123/124 to control them rather than only using J126. I'm not sure why it was designed this way as several of the circuits on J126 are not used. Fortunately, one of the WPC designs I made for the pinduino has 4 additional inputs, which worked perfectly for monitoring the four flashers on J123.
I'm happy with how it turned out.
Video: