RE: [CAD_CAM_EDM_DRO] Re: Digital screwcutting "gearbox"

Hi Fogassa,

I can comment on stepper ramping in a CNC controller program if you are
interested. I'm writing in C, but I can generalize. Contact me off list if
you're interested. KM6VV (a t) ARRL.NET

Alan KM6VV

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of afogassa
> Sent: Tuesday, October 18, 2005 10:50 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Digital screwcutting "gearbox"
>
> >
> Hi John,
> I'm also on this,I was thinking about the use of a microprocessor
> like atmel 90s2313, and a 2x16 lcd.
> FROG does make one for this purpose,but it does not have a lcd
> display, instead it uses a series of "bips" and bops.
> I was thinking of something a little more sofisticated.
> Using the atmel chip and A3977 step driver from Allegro and a
> little programming in bascom, I was able to have the motors moving
> nice.
> Still need to find a way to include a ramping in the software,
> after that I'll think in how to sincronize the headstock and
> steppers, I think this is not as dificult as implementing
> acceleration for step motors.
> if you want it off the shelf,do a search on the net for FROG CNC.
>
> Fogassa.