It would not be hard to do without a microprocessor, but it is almost surely easier when one is used (very few components but some programming instead. The pure hardware method would require a fair number of components, though by resorting to position sensitive switches to sense the end of travel, the job might still be quite simple. At one end you would just reverse the counting sequence to rotate back to the starting place. (closing the shutter at the same time, probably mechanically.)
Bob At 10:53 26.09.02 -0700, you wrote: >--- Huw Finney <[EMAIL PROTECTED]> wrote: > > Hi, > > Stepper motors can be geared and it works very well, > > take a look inside >...snip... >stepper motors, hm? I'm going to try and find a >non-battery method first (just the romantic in me... >plus I'm all thumbs about electronics). Can you have >a self-contained stepper motor controller for >something like this (turn 180 one way; turn 180 the >other way) without some sort of >microcontroller/pic/basic stamp? > >thanks, > >-- P > >__________________________________________________ >Do You Yahoo!? >Yahoo! Autos - Get free new car price quotes >http://autos.yahoo.com >_______________________________________________ >Cameramakers mailing list >[EMAIL PROTECTED] >http://rmp.opusis.com/mailman/listinfo/cameramakers _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
