I have posted a video of a pneumatic system controlled by a NXT. It is a system
that uses the HiTechnic IRLink sensor and some PF motors to control several air
valves. Basically, it is a cool way to control up to eight pneumatic valves
with one NXT using only one port. I have added a link to the video on my blog
and it can be found at http://www.youtube.com/watch?v=cRji6YlUKNM. It is the
pneumatic system I used to power my Lego Flexpicker
(http://www.youtube.com/watch?v=YoXCn4Gh_HA)
