Re: 3D Scanner/ Dizitizer - this one probably NG

I reached out to the company who makes this and their answer (below)
indicates that it has a resolution of about 1 cm. Cheap, but VERY
dirty.

Jeff

> I am thinking of using:
>
> DIRRS+ (Digital Infra-Red Rangefinding System)
> (SKU#IR-01-008)
>
> This would be for a digitizing probe. The resolution required is

quit

> small (thousanths of an inch)
>
> What is the resolution and linearity of this device?

about 1 cm.
HVW Technologies Technical Support
http://www.HVWTech.com

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "caudlet" <info@t...> wrote:
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "ruanb1" <rrbasson@t...>
> wrote:
> > Hi Guys
> >
> > Just an idea, I am thinking off. It sure would be nice to be able
> to
> > have a scanning system (affordable) without the contact like the
> > probes.
> >
> > I was thinking: Can one not use the distance sensors (which is
> > cheap) mounted on the axes to fulfill this, I mean we basically
> > would just like distances, and with software then create the
> > models???
> >
> > Have any of you thought in this line or build something like this
> on
> > your CNC machines?
> >
> > It surely would not break the bank (although it might be hell of
> > slow scanning).
> >
> > Would appreciate your ideas
> >
> > Regards
> >
> > Ruan
>
> Take a look at:
>
> http://www.hvwtech.com/pages/products_view.asp?ProductID=347
>
> Infrared (pulsed) short distance sensor. They have several
models.
> Serial (RS232) output feeds back digital value of analog distance
or
> one model has adjustable trip point and just sends back a single
bit
> logic level.
>
> The challenges are to get past the different reflectivity of an
> object and to determine the accuracy and repeatability.
>
> Ambient light is not a problem due to the module having it's own
> infrared output and it being pulsed at a frequency that is detected
> by the same receiving module. It uses a focused beam and receiver
at
> angles so it can only operate in the area of convergence.
>
> Price is right (<30 bucks) if it is usable.