Re: [CAD_CAM_EDM_DRO] :Re: digitizer arm

Alan Marconett KM6VV wrote:

> Dave, Ballendo,
>
> A thread a few weeks back was talking about an electronic "center
> finder". Which might benefit a little from this digitizing effort.
> Could a strain gauge (or 2, or 3) be used as the sensor in a center
> finder or digitizing arm?
>
> Alan
>

Certainly just the reverse of the ruggedized joystick used on some of the military fighters. 2 D should be fine. 3 D might be a
real problem.
use a piece of 5160 ground rod at about Rc 50. I should think one would want to be very careful about coming close to stressing it
close to yield. .... but then if you do the strain gages will tell you. ;-)

In 3D one would just load the end until it flexed..and in any case to get repeatable results the servo would load the probe to a
given stress everytime.

Dave