Re: [CAD_CAM_EDM_DRO] Re: optical switch

How accurate is that?
Optos go through a range over several mm where they partially obscure
the path between emitter and detector. The exact sensitivity may depend
on temperature and ambient light leaking in. Which may be fine for a
limit switch, but may not be accurate enough for a HOME limit switch if
that's what you intend to use it for. The home position may not have
highly repeatable accuracy, but I don't know.

Danny

Ron Ginger wrote:

>>
> Have a look at
> http://store.makerbot.com/electronics/electronics-kits/optical-endstop-v2-1-kit.html
>
> They have a complete kit of PC board and parts for an opto switch for
> $3. I just bought 10 of them- for $2.70 each- to use as limit switches
> on a couple projects.
>
> ron ginger
>

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