You are on to a possibility. You should know that there is a lot more than
meets the eye in what you are buying. These devices require high
computational capabilities. Hopefully there are canned algorithms available
to provide the outputs that you require. But they have the potential to
provide proper pitch and roll outputs AND simultaneous acceleration outputs
Max Lynn

"Dave Baker" wrote in message
...
On Wed, 07 Jan 2004 18:32:24 GMT, Rick wrote:

Try this for a start. There are several manufacturers of electrolytic
sensors and I am sure you can get what you need in just about any output
configuration.

http://www.microstrain.com/FAS-E.htm

The FAS-E looks slightly interesting, though they have a FAS-G which looks
a
lot better. In fact the PDF manual for the FAS-G has some useful
information
which might help in the lively debate going on regarding suitability of
accelerometers for this task! :-)

"What makes FAS-G unique is not only its ability to measure static angles,
but also dynamic, fast angular movements. Through the use of the two
accelerometers and one piezo-ceramic gyro coupled with the requisite
digital
filtering and embedded software tracking algorithms, FAS-G provides
dynamic
response while maintaining the DC (static) measurement accuracy. As a
result,
during rapid angular movements, both static and the dynamic components of
movement can be measured. This is not possible with conventional
inclinometers based on fluidic electrolytes or DC response
accelerometers."

Ooh - just spotted the 3DM-G on the same site - seems to be exactly what I
need, for about US$1500. This looks good. 3 weeks lead time is about the
only
worry.

Thanks,

Dave