Re: How do you measure SPEED on skates?

"Cedric" <[EMAIL PROTECTED]> wrote in news:[EMAIL PROTECTED]:

> You can either buy a speedo designed for inline skates or make one like
> explained here (in french sorry).
> http://www.teaser.fr/~mzirnheld/tc/compteu1.htm
> http://www.teaser.fr/~mzirnheld/tc/compteu2.htm
> http://www.teaser.fr/~mzirnheld/tc/compteu3.htm
> http://www.teaser.fr/~mzirnheld/tc/compteu4.htm

Yeah, that's a nice design, using a magnet and Hall-effect switch.  
It's simpler in all regards than my off-the-cuff musings.