Re: Microscope Z axis

Greg,

I bet you can use something like Ramsey Kits steper motor driver with
oscillator (about 30 bucks). there are several others. Check out
the "usual suspects"-- Marlin P. jones, MECI. Many of these are
basedon the 5804 chip, which will drive a stepper with some oomph,
relative to your needs.

I agree, you do not need a pc, or fancy drive here. the one thing you
may want is "idle" to reduce heating, depending on how you mount the
stepper to the focuser.

Hope this helps.

Ballendo

If you have some electronics capability, you could do this even less
expensively by adapting one of several circuits online using ttl
chips and tip120 transistors. But the kit driver would be my first
choice, since the oscillator to drive it is included.

--- In CAD_CAM_EDM_DRO@y..., "Greg's Clock Shop" <gregmc@w...> wrote:
> Hello Group A little bit different project. We would like to
install a step motor on the Z axis of a large Leitz toolmakers scope.
Its a older scope and needs a fine
> focus adjustment for high magnifications. None
is avail. to order today. I need help ? Is a stand alone controller
with joy stick control or just a jog
> and single step comand made ? I hate to use a
pc whem we omly need a jog to get close and a single step mode to get
our fine focus ? Such a
> device as the " FROG" single axis control
would be perfect but we need a motor of 200 oz/in or bigger to raise
the heavy iron collum up an down
> any ideals for a electronics challenged
watchmaker ? Many Thanks
>
>
>
> [Non-text portions of this message have been removed]