I have heard of something on the net that used several of these Analog
Devices sensors and therefore would possibly give you your gyro effect,
they were based on the ADXL05 sensor and I believe that an ADXL05 is a
micromachined sensor.  As you turn the sensor array in any direction you
would get a several analog voltages out depending on which way you
rotate the array, sending these voltages into a pic you get differences
between them which could be extrapolated into position of direction on
or in a sphere.  Does that make sense to anybody, maybe someone else
could explain that better!!!
Now going farther you can use that to control a device that thrusts
upward with some type of thrust vectoring control and now you have a
vertical take off and landing craft, I was thinking of a disc shaped
object with a fan jet blowing down and then controlling which way the
air stream is directed according to where your sensor says your tip
angles and where you want to go!!!
Well that is a long enough reply!!!
Sorry about the bandwidth waste but I think several picks could do this
rather well!!!!!!!!!

> ----------
> From:         TONY NIXON 54964[SMTP:Tony.nixon@ENG.MONASH.EDU.AU]
> Sent:         Thursday, December 04, 1997 5:42 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: PIC-based angle sensor...
>
> I'm making a single axis angle sensor using an ADXL05. It's accurate
> down to 1/10th of a degree over about 120 degrees as long as there is
> some sort of temperature stabilization/compensation.
>
>
> Tony
>
>
> Just when I thought I knew it all,
> I learned that I didn't.
>