To do this you will want to mount you 2 axis 2 g accelerometer with
the axis at 45 degrees to the horizontal, you can then measure the
horizontal acceleration whilst calculating for any tilt in the unit which
would affect the acceleration readings due to gravity.  This is
something I am currently working on.

Martin

> Don Hyde wrote:
>
> > <snip>
>
> > You could get real fancy, integrate for the velocity and adjust the timing
>
> > to keep the size of the  letters constant.
>
> I like that one, it would be a killer!
>
> /Marcus
>
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