New Life in Openmoko Phones

Al Johnson openmoko at
Wed May 20 01:59:22 CEST 2009

On Tuesday 19 May 2009, Toni Mueller wrote:
> Hi,
> On Tue, 19.05.2009 at 17:02:52 +0100, Rui Miguel Silva Seabra <rms at> 
> > On Tue, May 19, 2009 at 10:52:22AM -0400, Stefan Monnier wrote:
> > > That still doesn't explain why removing one of the two accelerometers
> > > is a good idea.  What is the benefit?  Why not remove them both?
> > > Is it that all the programs that use the accelerometers (as of now)
> > > only use one of the two?
> >
> > There are possible uses for two, the least of which are redundancy and
> > double checking.
> I guess that everyone who intends to use the device as a navigation
> system would welcome the two accelerometers for improved precision, and
> to better and longer guess the position/orientation of the vehicle
> while not having GPS, eg. in a tunnel.

Except that they aren't sensitive enough to rotational acceleration for that. 
If that's what you want to do then you should be asking for one accel to be 
replaced with a 3-axis gyro and/or magnetometer. You might like a USB CAN bus 
adaptor too.

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