G-Tech meter

[Tom Cloud]

>I bought a G-Tech meter and it pretty much works.  You have to be on a
>flat, level road for the thing to work correctly, though.  Since it uses
>an accelerometer for all of its calculations, it can get thrown off
>pretty quickly.  For example, if you are going up a hill, the
>accelerometer will think you are going faster than you really are.  You
>could even park your car on a hill, and G-Tech will think you are
>accelerating continuously.  The device is also only accurate for HP,

I'm confused .... an accelerometer is an "AC-coupled" device.
I.e. it only detects a "change" in velocity.  If it reads while
sitting still or when the speed is constant, it must be a weight
hung on a pot, not a 'real' accelerometer.

Tom Cloud <cloud at peaches.ph.utexas.edu>