Take a look to a bill (paper money), counting machine. Then imagine
the bills are glued on one side.

cheers,
Vasile

On 10/11/05, alan smith <micro_eng2@yahoo.com> wrote:
> OK...here is an interesting challenge a coworker has been discussing...
>
> Think of 10 pages in a notebook, like a ring binder.  As each page is turned, how to keep track of what page is facing you.
>
> My thought was hall sensors, with magnets on the page over the top of the sensors, so that the micro would read a hex or binary code depending on the pages that were still unturned..
>
> This is not a one-off project, so needs to be simple to implement, and easy to manufacturer.
>
> thoughts?
>
>
>
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