Re: Electronic Lead Screw | Poor Man's CNC ? | New Group: E-LeadScrew

I've set up a new Yahoo Group - "E-LeadScrew" - to discuss development
of an "Open Source" implementation of Electronic Lead Screws for
hobby-class bench lathes. Hopefully, this will result in an
assembleable "black box" of simple/cheap electronics, some criteria
and suggestions for motors and sensors, and maybe some pdf machining
instructions for brackets etc for common lathes which might benefit
from ELS - such as the SIEG C6, LatheMasters, South Bend.

See http://groups.yahoo.com/group/E-LeadScrew/

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "afogassa" <afogassa@y...> wrote:
>
> Right Bob,
> You've got it right.
> about two weeks ago I've post the same thread on electronic gear,
> but was turn down with the same "hook up a computer and you have a
> full cnc controller."
> I have a old south bend clone missing gears,and this would be
> perfect for it.
> I don't want to have a full cnc lathe, if I can cut threads it
> would be fine.
> As you mention there is a lot more than just hook up motors and get
> a computer to run it, after that done you still have to replace the
> leadscrews, learn how to programm fight with software control and
> have a big controller box and find a place to put it.
> Here is a nice and compact exemple:
> Atmel at90s2313
> Lcd
> a stepper drive based on a3977 from allegro.
> I make a stepper controller board based on the allegro microchip
> with galvanic opto isolated inputs and it's about 5 1/2 x 4 inches
> size could be smaller if I don't want it opto isolated.
> Get a code into the at90s2313 chip, and you'll have a box about 8 x 8
> inches that will do the job without a computer and costs less than
> $150 bucks.
>
> Fogassa.