At 09:49 AM 10/11/2005 -0700, you 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?

Have a look at the Leappad product in your nearest high-end toy store. ;-)

Then check to see if it has been patented.

>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
->> Inexpensive test equipment & parts http://search.ebay.com/_W0QQsassZspeff


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