Re: [CAD_CAM_EDM_DRO] Chopper max voltage?

Dan,

I know, let's ask Dan (for bare boards)! Sorry I didn't think of you
first.

Your "3-Axis 2A Chopper Driver PCB" looks like an excellent starting
point for "home brew" drivers. It is rated: "Will run 4,6 or 8 wire
stepper motor 1 V to 18.V and rated current of .25 amps to 2 amps", any
possibility (with mods) that it could drive 24v .18a steppers? This
would allow step/direction use of the MAXNC low end "motion controller"
70 oz/in motors I already have, before I have to get "high performance"
motors.

Alan

Dan Mauch wrote:

>
> If there are those that want to build their own 3 axis 2A drivers using the
> L297/L298 I have a board available now. It is a commercially made double
> side, plated through holes, solder masked and silk-screened. See my web page
> at www.seanet.com/~dmauch
> Dan
>
> -----Original Message-----
> From: Alan Marconett KM6VV <KM6VV@...>
> To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
> Date: Wednesday, October 04, 2000 12:43 PM
> Subject: Re: [CAD_CAM_EDM_DRO] Chopper max voltage?
>
> >Henrik,
> >
> >Sounds great! Hey, maybe we should get boards made up as a "LIST"
> >project? I know, let's ask Jon!
> >
> >Alan
> >
> >PS, WELCOME TO THE LIST!
> >
> >
> >Henrik Olsson wrote:
> >>
> >> Hello!
> >>
> >> I believe this is my first post to this group, and that depends on that I
> haven't been able to give any help since I'm not very experienced at CNC
> yet.
> >> However I'm in the process of building a small a CNC Mill to do PCB's and
> other small stuff. And for this reason I've designed a driver using the
> L297/L298 IC's (based on the datasheets).
> >> The driver uses automatic current reduction and you can adjust both the
> idle and run currents. It have inputs for step, dir, sync, and stand by (all
> windings off).
> >> I have schematics (in .JPG) and PCB Layout (in EAGLE-format). I will be
> happy to send it to you (or anybody else) if you want it.
> >> Please note that this driver is made for my personal use and not for
> production. Therefor I haven't made any extensive testing and the layout of
> the board may not be the most optimal. BUT it works pretty good.
> >>
> >> If you just want simple a schematic for a driver, download the datasheet
> for the L297 and 298.
> >>
> >> Regards.
> >> Henrik Olsson. Sweden.
> >>
> >> henrik-olsson@...