AVR-Chat

I wonder if a hall sensor would work.  Or better yet, what about a 
laser beam.  I saw a couple of those laser modules at radio shack the 
other day (cheap too :) That would cut down reaction time.  As for 
AVR, I will use the mega8, I have a bunch of those laying around.

--- In AVR-Chat@yahoogroups.com, Bernd Felsche <bernie@i...> wrote:
> On Thursday 11 March 2004 10:09, Ken Holt wrote:
> 
> > At 09:21 AM 3/11/2004 +0800, you wrote:
> > >I've thought of using a soap bubble instead; triggering when the
> > >refraction through or reflection from the bubble changes.
> > >
> > >Make sure that the air isn't moving too much around the test
> > >cell to avoid false triggers.
> 
> > Since every wacky idea is being offered:
> 
> wacky idea? It's called "ideation".
> 
> > Use an accelerometer in the cannon itself to measure recoil
> > momentum.  If the mass of the projectile is known, then the
> > exiting velocity is also known.
> 
> Not quite.
> 
> -- 
> /"\ Bernd Felsche - Innovative Reckoning, Perth, Western Australia
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