Re: Need help with stepper motor & safe idea


"Sammy Taylor" <sammytaylor@xxxxxxxxxxxxxxxxxxx> wrote in message
news:O83zf.110084$XC4.23287@xxxxxxxxxxxxxxxxxxxxxxx

>I need a DC stepper to make the lock for a small timer safe. Think of a
>flat piece of steel about 2" x 1/2" . I drill a hole in one end and slip it
>onto the shaft of the stepper then attach it there. Then mount this on the
>door to rotate into and out of a slot on the jamb -- just a very simple
>kind of latch that will toggle open or closed w/o power having to be
>continuously applied.
>
> How does one normally attach something to the shaft of a stepper -- can I
> just weld it? What diameter shaft makes sense? Where can I get a stout
> battery-operated stepper (i.e. can you help me filter the Google hits?)
>
> What would work better than this dumb idea? (Note: the safe uses an
> INTERNAL timer and battery. It must be able to latch or unlatch and STAY
> that way w/o power being applied until somebody opens the door.)

What happens if the battery goes flat?



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