Re: upgrade cnc

Hello,

As Bob asked; What are yo wanting the 12VDC motor to do? Is it your
spindle motor?

FWIW, Yes, you can "just connect a mosfet (h-bridge) to your
pport..."

You might want to consider the pport in relation to failure modes
though! (Is it an MB pport? Or an add-in card? Is th ecomnputer
expensive? or a dustbin cheapie?)

Tell us more and we'll likely give better answers.

Ballendo


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "billhribar"
<billhribar@...> wrote:

>
> Hi all:
> I am upgrading a small cnc to a more powerful cnc and am using

mach-3.

> what I need to know is how to interface the PWM signal from mach-3

to

> drive my 12 volt DC motor. You can't just connect the output of

the

> parallrl port to a mosfet driver, can you??? what kind of circuit

do i

> need? Anyone?
>
> thanks:
> Bill
>