Re: another limitswitch quest...

Jens,

I am using fork type opto-switches I bought off the web. Though not
specified they are Schmitt trigger output, repeatability was +-
0.0002, but that might have been my dial indicator. Output is +5
going to 0v when the beam is interupted, switch hysterisis is 0.003".

Both X switches are mounted in a Radio Shack plastic box with slots
machined in both ends for the blades to enter and I have mounted felt
wiping strips that clean the blades. Y & X switches are mounted on
some cut down 620 extrusion so I can easily adjust position.

So far no problems.

Bernard

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Jens Swales
<jipeess2000@y...>" <jipeess2000@y...> wrote:

> hi all
>
> i was thinking of swap my mechanical microswitches to optos, fork-
> stylys, that reacts when a object (nock, actuator or whatever) goes
> in the led/transistor gap. does anyone know how this works in a

shop-

> environment, with all dust and dirt that sooner or later gonna

cover

> both led and transistor with a fine layer.
>
>
> js