At 10:10 PM 4/3/2006 +0300, you wrote:
>Hi.
>A friend asked me if I could make him a test equipment which could test
>which of his skis has the best glide. This should be done by timing how
>fast the skier glides down a little hill. As he is competing in big
>contests he would like to have a light yet robust design which he could
>test the skis just before the contest. I think the best way to go would
>be to use IR and a reflector. One could then use a PIC to measure the
>time between point A and B. What do you think?
>
>Johan

For footraces, this is done commercially using RFID techniques, for example,
the execrably named "Championchip" system.

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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