Re: [CAD_CAM_EDM_DRO] Re: Encoder and read out

Calipers are nowhere near good enough.
I have a 100 cm caliper.

Its rated to be upto 0.06 mm out ... and still in spec.
Its nowhere near good enough for machining - for my uses.
It beats a ruler ... but not much better.

You need a real machine scale ...

Alan Marconett wrote:

>
> OK, although I have an 18" digital caliper, I wouldn't want to use it for
> such. Still, if it was cheap...
>
> Get a Sherline encoder and put it on the leadscrew? They have the display
> as well. May not be that cheap.
>
> A small PIC or AVR demo board with a display could be put into service to
> read the encoder (easy to do) and convert to inches or whatever you'd
> like.
> All it takes is a little code...
>
> Alan KM6VV
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com
> <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>, "Alan Marconett" <KM6VV@...>
> wrote:
>
> > Find a cheap import digital caliper, and mount that on your table.
>
> Er, Alan, the table moves through 17"
>
> Dave
>