OK, I found the wheel under "edge drive encoder".  Is there possibly
available somewhere not just a bare laser diode but some type of
enclosed module that accomplishes this?  It's such a common function
in small devices that it's difficult to believe it would be so
difficult to execute.

Thanks

-n.


On 12/21/06, James Nick Sears <jnsears@jamesnsears.com> wrote:
> On 12/21/06, Mike Hord <mike.hord@gmail.com> wrote:
> > The wheel can be found easily from Mouser or Digikey.
>
> Could you suggest a part number to get started?  I haven't had any
> luck searching.
>
>
> >The laser
> > may be more of a problem, if you want visible.  Plus, laser diodes
> > are EXTREMELY static sensitive (no really)(really really really).
> >
> > To give an idea, just transferring laser diodes from one static proof
> > container to another, with wriststrap, heel strap, at a grounded
> > bench in a static smock on a static safe chair dragging a chain on
> > a conductive surface floor, I still managed to kill 3 of 30.
> >
> > Mike H.
> >
> > On 12/20/06, James Nick Sears <jnsears@jamesnsears.com> wrote:
> > > Hi,
> > >
> > > I am working on a contract project and need a little help sourcing a
> > > couple of parts.
> > >
> > > First is a rotary click wheel switch like you might find on the side
> > > of a mobile phone or blackberry.  Something that operates with a
> > > finger or thumb and can be rotated indefinitely in either direction
> > > for control and ideally clicked inward for a third function.
> > >
> > > Secondly, a cheap laser diode (think a $2.99 laser pointer).  What's
> > > the best way to implement this as part of a project?
> > >
> > > It's important that both of these be easily sourced from reliable
> > > sources in production quantities for the future of the product.
> > >
> > > Thanks very much,
> > > James Nick Sears
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