> The project that we are developing is a time control of a kart racing.

Solution may or may not use a PIC and you don't have to do the work...

Here in the US, there are small radio controlled (R/C) race cars &
trunks.  Compeitions are held at various tracks all over.  Some of
the tracks have computerized scoring systems where each R/C car has
some sort of emitter and a (usually) PC does the score keeping.  It
can handle multiple cars running all at once.

And the little R/C cars take some amazing tumbles and bounces and
drive off (assuming they land wheels down).  A kart with human on
board would not be able to ignore equivalent crashes.  So whatever
goes on each car is almost certainly shock resistant enough for a
kart.  And the R/C cars are 1/8 to 1/12 scale, so it must also be
small enough and light enough.

Problem is that I don't have specifics of who is building & selling
these systems.  But you might want to check into it.

                                                Lee Jones

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