Re: CNC Controllers

Hi Jennifer,
I suggest you check out KellyCam. It converts HGLP to
Gcodes. It will also let you backplot and resize you files. The
program wil also run the motors. See link below. The program is FREE!
I use it for checking my codes. I am cutting circuit boards using the
Mechanical Etching bits from Think and Tinker.


http://www.kellyware.com/

John















--- In CAD_CAM_EDM_DRO@y..., "Jenni Harrowell"
<Jennifer.Harrowell@b...> wrote:

> Hi everyone,
>
> My partner has desided to build a CNC router and the hardware site

seems

> fine, but we'd like to drive it from some of the industry standard

S/W like

> signlab, etc. without the large expense of an industry controller.
>
> That's where I come in.
>
> I'm a programmer by trade so I'm trying to put together a program

that can

> read HPGL and output step/directoion for the stepper boards. I'm
> prototyping in good old basic so I only have to worry about the

logic, not

> the code, but I'm getting a few teething troubles.
>
> So has anybody out there got any routines for handling linear

interpolation

> and ramping. I think I've got the linear interpolation nearly

sorted but

> the code is a little cludgy and at the moment it adds 1 extra step

onto the

> primary axis (whichever one is doing the most steps in this move),

but I'm

> not sure how to handle the ramping.
>
>
> Any help at at all would be greatly appreciated.
>
>
>
>
> Jen.