<br><br><div class="gmail_quote">On Fri, Sep 18, 2009 at 8:35 PM, Al Johnson <span dir="ltr"><<a href="mailto:openmoko@mazikeen.demon.co.uk">openmoko@mazikeen.demon.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="h5">On Friday 18 September 2009, RANJAN wrote:<br>
> Hi,<br>
><br>
> I was wondering why FR has two accelerometers.They could have one 3 axis<br>
> accelerometer and a single angular rate gyro.How is a combination for 2<br>
> accelerometers more useful than one 3 axis accelerometer and a gyro?<br>
<br>
</div></div>Or, better, use a 3-axis magnetometer instead of a gyro.<br>
<br>
At the time the FR was designed, gyros were significantly more expensive and<br>
less available than accelerometers, and magnetometers were large and even more<br>
expensive. Spaced accelerometers sounded like a good way of getting most of<br>
the way there while still being affordable. In practice it doesn't work so<br>
well. In the meantime gyro and magnetometer prices have tumbled.<br>
<br>
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</blockquote></div><br>I think when FR was designed the Gyros costed around USD 17 .Is there a next version of Openmoko phone being designed?<br><br>Sriranjan<br>