Re: [CAD_CAM_EDM_DRO] Re: Laser mouse based DRO - Stand Alone ?

Just to jump in here, why use a pic? Can't get much simpler than a
couple of buffer ICs and a few pullup resistors!

The system has worked for several years now and if I had to do it
over again, this is the way to go as far as I am concened! I no
longer have the DRO on the mill as it is now CNCd, but it still works
on the lathe!

Yes, you need to have a computer with a built in math co-processor as
it was reasoned there are not to many 286s left out there. The whole
thing is on a board that I can put into the computer and steal the 5V
from an extra plug on the power supply. Some Radio Shack places still
carry the ICs, or you can build it from transistors if you like. To
me, it was easier to use the ICs.

The software and the plans are still up on my site and I still get a
few hits from people that want to build it and use it.

Have fun!

At 03:07 PM 8/23/2005, you wrote:

>--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@y...> wrote:
> > US digital sells encoders for $19 each and A.G. Eckstein's free DRO
>software will work on any used PC, 386 and up if I remember correctly.
>All that is required other than the encoders is a small breadboard
>with a few transistors.
> >
> > Everything has gotten so cheap that it's hardly worth converting
>mouse or trackball parts into a DRO. Unless someone just wants to see
>if it would work.
> >
> > I seen a DRO the other day and it used regular 4 conductor telephone
>wire for the encoders back to the readout, no shields. It worked?
> >
> > Ron
>
>
>I noticed A. G. Eckstein's site (in the links section )
>http://bellsouthpwp.net/A/r/Arts_home_page/DRO/
>
>but did not find if anyone has done that with a PIC ?
>
>I know the SummaTech unit has it, but I'm thinking simplier .....
>
>Dave

Bubba

OLDER THAN DIRT
Country Bubba
(Actually the inventor of Country and Bubba)
In God We Trust

http://bellsouthpwp.net/A/r/Arts_home_page/DRO/

LaGrange, GA




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