Re: Cheap DRO system using digital scales and a PC

Wally K. Asks:

I wanted to make sure i knew what this thread was about. As far as i
understand it is about using a digital caliper with an interface to
connect to the PC to be used for a DRO.

--- In CAD_CAM_EDM_DRO@egroups.com, diazden <diazden@o...> wrote:
> Lee;
> Can you please upload the data to the files section?-there are
people interested
> regards
> mariano
>
>
> Lee Studley wrote:
>
> > Wilfried,
> >
> > If its really 24bits, then it isnt the standard digimatic spec.
> > I found it on Don Lancasters site tinaja.com
> >
> > and from Mariano's email of the caliper specs(thanks!).
> >
> > -Lee
> >
> > --- In CAD_CAM_EDM_DRO@egroups.com, "Wilfried Fedtke"
> > <wilfried.fedtke@t...> wrote:
> > > Hello,
> > >
> > > i try to connect my digital scale with the computer. My digital
> > scale
> > > looks like that of http://www.guanglu.com.cn/Digital%20Height%
> > 20Gage%
> > > 20&%20Scale%20Unit.htm.
> > > I have gotten following description to my digital scale:
> > >
> > > Working of the interface: synchronus serial
> > > Data: Binary code, 24 bits, each datum will send twice
> > > The cycle is 300 ms (or 20 ms in fast reading state)
> > > transmitting time 0,5 ms
> > > Pulse range of data: Datum level <=0,2 V , level "1" >= 1,3 V
> > > Clock pulse: CP 90 kHz, effective for high power level
> > > wires: negative power, clock pulse, data, positive power.
> > > > To be read the data over the serial interface, it is very
> > difficult
> > > since the data-transfer takes place synchronized.
> > > I want to try to read the data over the parallel interface.
> > >
> >
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