IPOs and dupliframes

ok, i’d like to know how he made this “Time IPO”


i imported the .blend into 2.40 but it confused me…i’d like to know how he made it, how it is assigned to an empty and how i can make it in 2.4…

…wouldn’t it be useful in all dupliframes projects? if not, i’d like to make my own for my other dupliframe projects…

…also why does it work…a function of time but not speed? im a little confused here…


There is a video tutorial here which explans all of this (some button positions may have changed) here (paths and dupliframes):