we used the roland DCB (Digital Control Bus) a pre-cursor to MIDI at
the museum of science and history to control lighting in some of the
exhibits and in the noble planetarium. it turns out that the DCB had
just enough intelligence to handle "light on / light off", used
inexpensive cabling, and had a thriving early digital musician hacker
scene. we were able to hack together a simple system for about half
the cost of a "professional" museum exhibit lighting control unit. it
couldn't do as much, but worked fine for what we needed.
meadhbh hamrick * it's pronounced "maeve"
@OhMeadhbh * http://meadhbh.org/