Re: The mechanical part of my router is done!

Alan, could you please elaborate on why we want the logic power
isolated from the motor power?
Thanks,
Marvin

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Alan Marconett KM6VV
<KM6VV@a...> wrote:

> Hi Chuck,
>
> An interesting and very well made project! And as I have plenty of
> stepper motors (I even have the same motors you used!), I'd be
> interested in seeing plans for building it. Do you have plans ready
> that you could post or email?
>
> For electrical hints, I'd suggest you keep the stepper wires away

from

> the digital wires, and be sure to have enough length to conveniently
> reach your driver/PS. I have built a few driver/PS boxes, and just
> finished and posted one in the SherlineCNC files (Schematic to be

posted

> in a day or two).
>
> Also an older one under photos "driver-P" of CCED.
>
>

http://photos.groups.yahoo.com/group/cad_cam_edm_dro/lst?.dir=/Driver-
PS+%26+Pendant&.src=gr&.order=&.view=t&.done=http%
3a//briefcase.yahoo.com/

>
> Ouch! Just look in photos for Driver-P
> http://photos.groups.yahoo.com/group/CAD_CAM_EDM_DRO/lst
>
> My driver/PS boxes use Geckos, and one uses an early version of the
> Gecko (CN0143). Microstepping works better on the newer steppers

that

> are designed for it.
>
> Be sure to put in line switch and fuse, grounded power cord, power

entry

> module (for the filtering), enable switches for each axis (where
> possible), connectors for the stepper motors (makes trouble shooting
> easier), DB25 connector for the parallel port, and a "power on"
> indicator. Also desirable are SSS (solid state switches) for

Spindle

> (and AUX), individual fuses for each Gecko (be sure to put a 470 uF

cap

> at each module), Connectors for the limit switches, M6 "tool

change",

> and a digitizer.
>
> G201's need +5 from the PC, a wall-wart. Don't be tempted to hang

a 5V

> regulator chip on the motor's +48V supply! We WANT the isolation.
>
> HTH
>
> Alan KM6VV
> SherlineCNC
>
> Charles Knight wrote:
> >
> > >
> > >
> > >Looks very nice considering the minimum of dollars invested.

What was your

> > >total investment so far?
> > >
> >
> > I haven't added it up, completely, yet. But after purchasing
> > miscellaneous screws, nuts, bolts, drill bits, etc...I think I'm

down

> > somewhere around $20 total. Not too bad for such a complex

project.

> >
> > -- Chuck Knight