Re: [CAD_CAM_EDM_DRO] Maxnc - buy it with the proper documentation only

Hi Mike,

I too am using the MAXNC. Hey, it's a start! Sounds like you're driving big things! I also want to add limit switches. I'm just
driving a sherline mill, and I only have the little unipolar MAXNC driver board. Later I will do step & direction with something
with a little more power. The FET's are fine, I think I still have a few solid state switches, and thought I would use them.
Actually, I'd like to add CNC speed control to the spindle. Haven't really planned that out yet.

Sorry I didn't pick up on the BIOS problems before, If I can help, email! I'm just getting going here, but I do enjoy solving
computer hardware/software problems. My main worry now is the limited drive in the Z axis. I had all the gibs out, so hard telling
how well they're adjusted. My vertical was kinda "heavy" before I converted to CNC. I used Sherlines' CNC kit, love the parts.

Alan


Mike Rainone wrote:

> Hi, Group
>
> To all who have been helping me with the Maxnc problem, and Doug Yeager
> for your help on the ramping, we figured out the Maxnc "problem". The
> instructions should clearly state that in the BIOS set up, make sure
> your parallel port is set to bi-directional mode, ECP, not enhanced, or
> EPP! While this may seem obvious to anyone who has worked on these
> things before, it was not obvious to me. EVERY piece of documentation
> for every DOS based controller should address the port set up in the
> BIOS. For older motherboards this might not be particularly relevant.
> However, as we all begin to "upgrade" to newer computers in the shop,
> computers that were old windows machines, the old setups are inherited.
> The old setup for windows printing is the wrong setup for DOS control,
> or so it seems.
>
> BTW, I am working on an additional board to add into my case to do
> limit switches and all windings off. I am going to use logic level FETs
> through a Pic Chip control for the relays, unless someone has a better
> idea. I am using one of Dan Mauch's older 5A boards without this
> capability, so after the router damn near ran away with me, I thought
> that I had better add limits (using the cool proximity sensors that Bob
> Campbell showed me) and all windings off since the motors get pretty hot
> just sitting there in the Texas sun. If anyone knows of a prepackaged
> add-on board for a reasonable price let me know, otherwise any kibitzing
> would be appreciated.
>
> Anyway, thanks to all.
> Mike Rainone
>
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